Suì Yín Zī

Sui Yin Zi is one of the most unusual and controversial products in the world of modern pu-erh. These small, hard, polished-to-shine dark granules, externally resembling scattered ancient silver coins, represent a deeply processed variety of shu pu-erh, obtained from Lǎo Chá Tóu (老茶头, Lǎo Chá Tóu) — “old tea heads,” natural clumps formed during wet piling. Sui Yin Zi provokes heated debates in the tea community: some value it for its pronounced nuoxiang (糯香, nuò xiāng) — “glutinous rice fragrance” (糯米香, nuòmǐ xiāng), exceptional brewing endurance and simplicity of preparation, while others criticize it for the opacity of the production process and market abuses. This article strives to present an objective picture, relying on verified sources.

1. Classification and Origin:

• Type: Post-fermented tea (dark tea, 黑茶). Belongs to the category of shu pu-erh (熟普洱, Shú Pǔ’ěr) — “ripe,” “mature” pu-erh that has undergone accelerated fermentation through wet piling (渥堆, wò duī). Degree of fermentation — complete (post-fermentation).
• Category: Modern artisanal product based on shu pu-erh. It is a highly processed variety of Lao Cha Tou — a byproduct of fermentation, refined to the state of a commercially attractive independent tea. Also known under the names Chá Huā Shì (茶化石, Chá Huàshí) — “tea stone” or “tea fossil,” as well as Jīn Bù Huàn (金不换, Jīn Bù Huàn) — “not to be exchanged even for gold.”
• Origin: China, Yúnnán Province (云南, Yúnnán). Main production centers are concentrated in Xīshuāngbǎnnà Dǎi Autonomous Prefecture (西双版纳, Xīshuāngbǎnnà), primarily in Měnghǎi County (勐海, Měnghǎi), as well as in Pu’er City (普洱, Pǔ’ěr).
• Geographic coordinates: Approximately 21°–22° North latitude, 100°–101° East longitude (Menghai area).

2. History and Cultural Significance:

• History: Sui Yin Zi is a product of the 21st century, inextricably linked to the history of Lao Cha Tou and the wet piling technology of shu pu-erh. The wò duī (渥堆) technology was developed and implemented in 1973–1975 at the Kūnmíng Tea Factory (昆明茶厂, Kūnmíng Cháchǎng). During the piling process, part of the tea leaves stick together into dense clumps under the influence of released pectin, forming Lǎo Chá Tóu (老茶头) — “old tea heads.” For a long time, these clumps were considered production defects and waste — they were discarded or sold at throwaway prices. However, over time, tea makers and enthusiasts appreciated the rich taste and sweetness of these “tea heads.”

  From approximately 2009, individual Yunnan tea companies began releasing a product called “Cha Hua Shi” (tea stone) — old tea heads that underwent additional processing: selection, cutting and polishing. The product did not attract mass attention until around 2013, when one tea company renamed it “碎银子” (“Sui Yin Zi”), creating a bright marketing image — scattered ancient silver ingots. From this moment, the product began rapidly gaining popularity, and its price began to rise.

  The widely circulated legend that suì yín zǐ (碎银子) were used on the Chamagudao (茶马古道, Chámǎ Gǔdào) — Tea Horse Road — as a means of payment instead of silver, has no historical confirmation. The Chamagudao functioned from the Táng era (唐, Táng) until the middle of the Qīng (清, Qīng), while the wo dui technology appeared only in the 1970s. Sui Yin Zi as a product could not physically exist during the era of tea-horse trade — this is a beautiful but completely fictional marketing story.

• Name:

  • Suì (碎) — “broken,” “crushed,” “scattered.”
  • Yín (银) — “silver.”
  • Zǐ (子) — suffix denoting small objects, granules.
  • Collectively — “scattered silver,” “broken silver.” The name reflects the external similarity of polished dark tea granules to pieces of silver darkened by time.

• Cultural significance: Sui Yin Zi became one of the most commercially successful tea products of the 2010–2020s in China, significantly expanding the audience of shu pu-erh consumers. Thanks to its simplicity of brewing, attractive appearance and unusual nuoxiang (糯香), it lowered the entry barrier for newcomers to the world of pu-erh. At the same time, Sui Yin Zi became a symbol of discussion about the boundary between innovation and marketing manipulation in the tea industry. In the professional tea community, attitudes toward it are ambiguous: connoisseurs of classic pu-erh often view it as a deeply processed product that has lost connection with terroir and the mastery of tea craftsmanship.

3. Botanical Description and Raw Material:

• Variety / Cultivar: Main raw material — leaves of the large-leaf Yunnan variety Yúnnán Dǎ Yè Zhǒng (云南大叶种, Yúnnán Dàyèzhǒng), including its local varieties: Měngkù Dà Yè Zhǒng (勐库大叶种) and Měnghǎi Dà Yè Zhǒng (勐海大叶种). This is typical Camellia sinensis var. assamica — a large-leaf form of tea tree with high content of polyphenols and pectic substances. Premium segment producers claim to use raw material from trees over 100 years old (古树, gǔ shù), however independent verification of tree age for the final product is difficult.
• Harvest: Spring, summer, autumn. For production of highest quality Sui Yin Zi, spring raw material (春茶, chūnchá) with higher content of amino acids and pectin is preferable.
• Picking standard: Usually one bud with two to four leaves (一芽二叶至一芽四叶). For premium lines, a standard of “one bud — one leaf” (一芽一叶初展, yī yá yī yè chū zhǎn) is claimed, however after going through the full cycle of fermentation, cutting and polishing, determining the original picking standard from the finished product is practically impossible.
• Raw material requirements: Key requirement — high content of pectic substances in leaves, ensuring natural sticking during fermentation. Leaves from young, juicy shoots of large-leaf trees contain more sugars and pectin, which determines the quality of final Lao Cha Tou and, accordingly, Sui Yin Zi.

4. Terroir and Cultivation:

• Region: Yunnan Province is located in southwestern China, at the junction of Indochina and the Tibetan Plateau. This is the recognized cradle of the tea tree Camellia sinensis, where the world’s most ancient tea trees grow.
• Climate: Xishuangbanna has a tropical monsoon climate: average annual temperature 14–21°C, annual precipitation over 1500 mm, relative humidity 80–88%, cloudiness and fog throughout a significant part of the year. Winters are mild, without frost, allowing tea trees to grow year-round.
• Growing altitude: 1000–1800 m above sea level for main tea regions of Menghai. The most valuable raw material comes from high-altitude areas: Bùlǎng Mountain (布朗山, Bùlǎng Shān, up to 1800 m), Lǎo Bān Zhāng area (老班章, Lǎo Bān Zhāng), Nánnuò area (南糯, Nán Nuò).
• Soils: Red-yellow lateritic soils (红黄壤, hónghuáng rǎng), acidic (pH 4.5–6.5), well-drained, rich in organic matter and minerals — iron, aluminum, magnesium. High mineral content in soil forms the characteristic mineral profile of Yunnan teas.
• Ecosystem: Ancient tea gardens of Bulang Mountain and surroundings are located in conditions of rich tropical and subtropical forest with forest coverage up to 93%. Tea trees grow in symbiosis with other species — camphor trees, ficus, epiphytes, forming a complex microecosystem that influences the chemical composition of the leaf.

5. Production Technology:

The production technology of Sui Yin Zi represents a multi-stage process that can be divided into two major stages: classic shu pu-erh production (with obtaining Lao Cha Tou) and subsequent specific refinement.

Stage I. Shu Pu-erh Production and Lao Cha Tou Formation:

• Picking (采摘 — cǎi zhāi): Manual or mechanized harvesting of tea leaf.
• Withering (摊晾 — tān liáng): Collected raw material is spread in a thin layer under a canopy for partial moisture removal. Time — from several hours to a day.
• Kill-green fixation (杀青 — shā qīng): Roasting in a wok or drum at high temperature to stop oxidative enzymes and preserve the biochemical potential of the leaf. This distinguishes pu-erh raw material (sun-dried rough tea, 晒青毛茶) from green tea in that fixation is conducted less intensively, preserving enzymatic activity.
• Rolling (揉捻 — róuniǎn): Mechanical or manual rolling to break cell membranes and release juice, which activates future enzymatic processes.
• Sun-drying (晒干 — shài gān): Key stage for pu-erh raw material — drying under direct sunlight. The resulting product is called Shài Qīng Máo Chá (晒青毛茶, shài qīng máo chá) — “sun-dried rough tea.”
• Wet piling (渥堆 — wò duī): Central stage of shu pu-erh production. Maocha is laid in large piles (from 1 to 10 and more tons), moistened with water and covered with cloth. Controlled microbial fermentation starts in the piles at high temperature (50–65°C) and humidity. The process lasts from 45 to 60 days, sometimes longer. The tea master regularly turns the piles (翻堆, fān duī) to control temperature, humidity and uniformity of fermentation. During piling, tea leaves actively release pectin — a viscous, sticky substance that glues individual leaves into dense clumps. It is from these clumps, which cannot be separated without damaging the leaf, that Lǎo Chá Tóu (老茶头) — “old tea heads” are formed. According to producer statistics, from 10 tons of fermenting shu pu-erh, only 100–200 kg of material suitable for further processing into Sui Yin Zi is obtained.

Stage II. Production of Sui Yin Zi proper:

• Selection and sorting of Lǎo Chá Tóu (筛分 — shāi fēn): Tightly stuck clumps are extracted from the mass of fermented tea. The densest, most compact specimens with high pectin content are selected.
• Cutting (切割 — qiē gē): Selected tea heads are cut with special equipment into granules of approximately equal size (usually 0.5–1.5 cm). This gives the product its characteristic appearance of uniform “pieces of silver.”
• Polishing (抛光 — pāo guāng): Cut granules undergo mechanical polishing, which gives them a smooth, shiny surface, enhances visual similarity to metallic nuggets and increases density.
• Nuomixiangye aromatization (糯米香叶熏制 — nuòmǐ xiāng yè xūn zhì): A significant part of commercial Sui Yin Zi undergoes aromatization with leaves of the plant 糯米香 (Nuo Mi Xiang) — Semnostachya menglaensis H. P. Tsui (syn. Strobilanthes tonkinensis), an endemic herbaceous plant of the Acanthaceae family, growing in tropical forests of Xishuangbanna. Dried leaves of this plant when crushed release a characteristic aroma of glutinous (糯) rice, due to 2-propanoyl-3,4,5,6-tetrahydropyridine and 2-propanoyl-1,4,5,6-tetrahydropyridine. The aromatization method is analogous to the technique of aromatizing jasmine teas (窨制, xūn zhì): tea granules are mixed with crushed herb or subjected to contact aromatization. There is also a version without aromatization — “原味” (yuán wèi, “original taste”).
• Final drying (足干 — zú gān): Final drying to bring moisture to a safe storage level (usually ≤12%).

Important note on production contradictions: The production process of Sui Yin Zi remains one of the least transparent in the tea industry. Most manufacturing factories in Menghai and surroundings do not allow outside observers in workshops, citing protection of “trade secrets.” A number of tea experts and journalists point out that some producers — especially small and unscrupulous ones — may use not natural Lao Cha Tou, but ordinary crushed shu pu-erh, compressed with binding additives (粘合剂, zhānhé jì) to achieve characteristic density and insolubility during brewing. Detecting such fakes in the finished product is extremely difficult, which is a subject of serious concern in the professional taster community.

6. Organoleptic Characteristics:

• Dry leaf appearance: Granules of irregular or slightly rounded shape 0.5–1.5 cm in size, rarely larger. Color — dark brown to black, with oily shine on the surface due to polishing. Texture — very dense, hard, “stone-like.” Granules are heavy to the touch, significantly denser than ordinary pressed pu-erh. Characteristic feature — uniformity of shape and size within one batch.
• Dry leaf aroma: In aromatized versions — pronounced, enveloping aroma of glutinous rice (糯香), soft and sweetish. Underneath — warm notes of mature shu pu-erh: wood, prunes, dried fruits. In non-aromatized versions — clean aroma of mature fermentation: earth, warm wood, nuts, without nuoxiang (糯香).
• Liquor aroma: Dense, enveloping. In aromatized versions — sweet nuoxiang (糯香, glutinous rice aroma) in the foreground, gradually transitioning to deep notes of mature shu pu-erh: nutty, woody, occasionally chocolate and date (枣香, zǎo xiāng). In “original” versions — classic profile of mature shu pu-erh with notes of prunes, tree bark, nuts.
• Taste: Dense, thick, oily (厚滑, hòu huá). Sweet (甜润, tián rùn), with pronounced stickiness and enveloping texture, due to high content of pectin and soluble sugars. Bitterness and astringency are practically absent (with quality raw material and correct fermentation). Aftertaste (回甘, huígān) — long, soft, sweetish, with residual notes of nuts and dried fruits. Taste profile is relatively simple and linear compared to classic aged pu-erh.
• Liquor color: Red-brown (红浓, hóng nóng), deep, clear, with warm amber-ruby tint. Resembles the color of dark amber or aged cognac. The liquor is transparent and clean even with multiple brewings.
• Spent leaves (wet leaves): Characteristic feature of Sui Yin Zi — granules maintain their shape even after 15–20 and more steeps. They do not break down into individual leaves, but only slightly soften and increase in volume. This sharply distinguishes Sui Yin Zi from ordinary Lao Cha Tou, which gradually opens up. Color of soaked granules — dark brown, brownish-red.

7. Chemical Composition:

Detailed analytical studies of Sui Yin Zi specifically as a separate product in peer-reviewed scientific literature are limited. However, since it is a derivative of shu pu-erh, its biochemical profile can be characterized based on the extensive database on shu pu-erhs:

• Polyphenols: Catechin content is significantly reduced as a result of deep fermentation, however the content of their oxidation products — theaflavins and thearubigins is increased, giving the liquor its characteristic red-brown color and soft, bitterness-free taste.
• Pectic substances: Pectin content in Sui Yin Zi is substantially higher than in ordinary loose shu pu-erh — it is pectin that ensures the formation of dense clumps during piling and the “oily” texture of the liquor. Pectin is a soluble dietary fiber that positively affects gastrointestinal function.
• Amino acids: Contains L-theanine and other free amino acids, however in smaller quantities than in green or white teas, due to deep fermentation.
• Alkaloids: Caffeine (content in shu pu-erh usually amounts to 20–30 mg per 150 ml cup — lower than in green tea or coffee), theobromine, theophylline.
• Vitamins: In small quantities — B vitamins, vitamin C (significantly destroyed during fermentation), vitamin E, vitamin K.
• Minerals: Potassium, magnesium, manganese, iron, fluorine, zinc, selenium — typical mineral profile of Yunnan large-leaf teas growing on lateritic soils.
• Lovastatin and statin-like compounds: Shu pu-erhs contain mycobiotic metabolites, including lovastatin — a natural statin synthesized by fungi Aspergillus and Monascus participating in the wo dui process.
• Microbiome: Mold fungi (Aspergillus niger, Aspergillus luchuensis, Rhizopus, Penicillium), yeasts (Saccharomyces, Candida) and bacteria actively participate in the piling process, whose metabolites form the specific taste-aromatic profile of mature shu pu-erh.
• Aromatic compounds of nuomixiangye (糯米香叶): When using aromatization with Semnostachya menglaensis leaves, characteristic tetrahydropyridine alkaloids are introduced into the composition — 2-propanoyl-3,4,5,6-tetrahydropyridine and 2-propanoyl-1,4,5,6-tetrahydropyridine (up to 41% and 37% of the volatile fraction of leaf extract respectively), causing the glutinous rice aroma.

8. Health Properties:

• Digestive improvement: High pectin content forms a soft enveloping film on the gastric mucosa, promoting comfortable digestion. Shu pu-erh is traditionally drunk after abundant, fatty food.
• Lipid metabolism support: Thearubigins and lovastatin contained in shu pu-erh contribute to normalization of cholesterol and triglyceride levels in blood. Numerous Chinese and international studies confirm the hypolipidemic action of shu pu-erh.
• Antioxidant action: Despite reduced catechin content during fermentation, their oxidation products — theaflavins and thearubigins — retain pronounced antioxidant activity, neutralizing free radicals.
• Mild tonic effect: Caffeine content in shu pu-erh is moderate, so the tonic effect is milder than green tea or coffee, and combines with the relaxing action of L-theanine.
• Warming action: Shu pu-erh belongs to “warm” teas in traditional Chinese medicine terminology (中医, zhōngyī). Sui Yin Zi warms well in cold weather, improves peripheral circulation.
• Intestinal microflora support: Metabolites of microorganisms that participated in fermentation have probiotic action, supporting healthy intestinal microflora.
• Blood sugar regulation: A number of studies indicate the ability of polysaccharides and polyphenols of shu pu-erh to reduce postprandial glycemia.

9. Brewing:

• Water temperature: 95–100°C (Sui Yin Zi is a dense, deeply fermented tea requiring boiling water for full flavor and aroma development).
• Tea amount: 5–7 g per 150–200 ml water (ratio approximately 1:30).
• Teaware: Optimal — clay teapot from Yíxīng clay (紫砂壶, zǐshā hú), especially from porous Duǎn Ní (段泥) or Zǐ Ní (紫泥) clay, which retains heat well. Also suitable are gàiwǎn (盖碗, gàiwǎn) from porcelain or clay, as well as heat-resistant glass teapot for visual observation of the liquor. For boiling — cast iron or glass teapot.
• Process:
  1. Warming teaware: Rinse teapot or gaiwan with boiling water, drain.
  2. Adding tea: Place 5–7 g Sui Yin Zi in warmed teaware.
  3. Rinsing (润茶, rùn chá): Pour boiling water, drain completely after 5 seconds. Repeat rinsing twice. This is necessary for “awakening” dense granules and removing possible dust.
  4. First steep: Pour boiling water, steep 10–15 seconds, pour liquor through fairness cup (公道杯, gōngdào bēi) into cups.
  5. Subsequent steeps (2–10): Increase steeping time by 5 seconds with each subsequent steep.
  6. Late steeps (11–20+): Steeping time can be increased to 30–60 seconds and more. Quality Sui Yin Zi withstands 15–20 and more steeps, maintaining richness and sweetness of liquor.
  7. Boiling (煮饮, zhǔ yǐn): After 10–15 steeps, granules can be transferred to a teapot and boiled on low heat for 3–5 minutes. Boiling reveals additional depth and density of liquor. This method is especially good for cold season.

10. Storage:

Sui Yin Zi, like other shu pu-erhs, does not require particularly strict storage conditions, but is suitable for long-term storage and gradual aging:

• Location: Dry, dark, well-ventilated room without foreign odors. Avoid direct sunlight, sharp temperature changes.
• Temperature: Optimally 20–30°C. Fluctuations of more than 10°C during the day are undesirable.
• Humidity: 50–70%. Too high humidity (>75%) may provoke unwanted mold; too low (<40%) — will slow natural aging.
• Container: Ceramic or clay containers with loose lid (for tea “breathing”), paper bags, bamboo containers. Food-grade tin cans are acceptable. Completely airtight packaging (plastic, vacuum) is categorically not recommended — tea needs minimal air exchange for continuation of microbiotic processes.
• Tea enemies: Direct sunlight, moisture, foreign odors (spices, coffee, household chemicals).
• Aging potential: With proper storage, Sui Yin Zi can be stored for years. Over time, nuoxiang (糯香) gradually weakens, giving way to deeper chenxiang (陈香, chén xiāng) — “aging aroma,” woody and nutty. Taste becomes softer and sweeter.

11. Price and Counterfeits:

• Price category: Sui Yin Zi is positioned by producers as a high-price segment product of shu pu-erh. Price depends on several factors: quality of source raw material (ancient tree vs. plantation), age and origin of Lao Cha Tou, aromatization method (natural nuomixiangye (糯米香叶) vs. synthetic flavoring), producer reputation. Retail prices vary from quite affordable (for mass production of questionable quality) to high (for production from reputable factories using old tree raw material).

• How to avoid counterfeits:

  • Buy from verified sellers: Give preference to specialized tea shops with stable reputation, capable of providing information about producer, year of release and raw material origin.
  • Evaluate appearance: Quality Sui Yin Zi — uniform dark brown or black color with oily shine, without visible foreign inclusions, dust and mold. Granules are dense, heavy. Counterfeits often look dull, loose or, conversely, suspiciously “glossy.”
  • Check aroma: Natural nuoxiang (糯香) — soft, delicate, pleasant. Sharp, intrusive, “chemical” sweet smell that remains unchanged from first to last brewing — sign of synthetic flavoring. Natural nuomixiangye (糯米香叶) aroma gradually weakens by the 3rd–5th steep, giving way to tea base.
  • Evaluate liquor: Liquor of quality Sui Yin Zi — clear, red-brown, without cloudiness. Cloudy, dull liquor with foreign tastes (mustiness, sourness, “fishy” smell) indicates low quality or production violations.
  • Check nàipào dù (耐泡度, nài pào dù) — brewing endurance: Real Sui Yin Zi brews 15–20 and more times, maintaining taste and sweetness. Counterfeits “give up” after 8–10 steeps, noticeably losing richness.
  • Beware of suspiciously low price: If the price of Sui Yin Zi is comparable to the price of cheapest loose shu pu-erh — this is almost certainly a fake, produced from low-grade raw material with binding additives.

12. Interesting Facts:

• Raw material rarity: According to producer data, from 10 tons of fermenting shu pu-erh, only 100–200 kg of tea mass can be considered Lao Cha Tou of sufficient quality, and from them only a small part is selected for Sui Yin Zi production. Thus, with honest production, the yield of final product amounts to about 1–2% of the source raw material volume. However, critics point out that modern industrial scales of Sui Yin Zi production can hardly be ensured exclusively by natural Lao Cha Tou.
• “Stone that doesn’t open”: One of the unique features of Sui Yin Zi — its granules practically do not break down during brewing and even during prolonged boiling. This property gave rise to the second name — “tea stone” (茶化石). This is uncharacteristic for classic Lao Cha Tou — that gradually opens during brewing.
• 糯米香叶 — rare plant: Semnostachya menglaensis — endemic of Xishuangbanna tropical forests, growing in understory. Plant height 30–100 cm, with small leaves that acquire characteristic glutinous rice aroma when dried. In the tradition of Dǎi (傣族, Dǎizú) and Hāní (哈尼族, Hānízú) peoples from Yunnan, this plant has long been used as a beverage flavoring and has phytotherapeutic application (清热解毒, qīngrè jiědú — “cooling heat and removing toxins”).
• Marketing phenomenon: Sui Yin Zi is one of the brightest examples in Chinese tea history, when marketing renaming (from unremarkable “tea stone” to romantic “scattered silver”) radically changed the market fate of a product, transforming it from a niche curiosity into a mass bestseller.
• Tea culture vs. industry: The discussion around Sui Yin Zi reflects a broader problem of the modern tea market — conflict between artisanal tradition, assuming transparency and traceability, and industrial approach oriented toward standardization, scaling and marketing.

13. Comparison with Other Shu Pu-erhs:

• Lǎo Chá Tóu (老茶头, Lǎo Chá Tóu): Direct predecessor and source material for Sui Yin Zi. Lao Cha Tou are natural clumps that have not undergone additional processing, formed during piling. They have irregular shape, rough surface and gradually open during brewing. Taste of Lao Cha Tou is usually more “earthy,” rich, with pronounced fermentation character. Sui Yin Zi is more “polished,” uniform, with nuoxiang (糯香) and smoother texture, but less complex in taste profile.
• Gong Ting Pu-erh (宫廷普洱, Gōngtíng Pǔ’ěr): “Palace pu-erh” is produced from small-leaf, bud raw material of highest grade and distinguished by delicate, refined taste with nutty, chocolate and creamy notes. Gong Ting is tea where quality is determined by raw material and fermentation mastery, while Sui Yin Zi is a product of additional mechanical and aromatic processing, in which the source raw material is largely “hidden.”
• Da Jin Ya Shu Pu-erh (大金芽熟普洱, Dà Jīn Yá Shú Pǔ’ěr): Elite shu pu-erh from large golden buds. Has velvety, soft, chocolate-fruity taste, beautiful appearance. Common with Sui Yin Zi — positioning in premium segment, but Da Jin Ya is a straightforward production product (fermentation → sorting), without cutting and polishing stages.
• Loose Shu Pu-erh (散熟普洱): Classic loose shu from mature leaf — coarser, often more astringent, with pronounced “earthy” and woody notes. Costs significantly less. Sui Yin Zi differs from it fundamentally in different texture, higher sweetness and nuoxiang (糯香), but yields in depth and variability of taste profile.

In conclusion:

Sui Yin Zi is a phenomenon where ancient Yunnan tradition of post-fermented teas, modern technological inventiveness and marketing power converged. These small dark granules, resembling scattered darkened silver, offer dense, sweet, enveloping liquor with unusual glutinous rice aroma — an experience unlike any other tea. For newcomers to the pu-erh world, Sui Yin Zi can become a soft, pleasant and unforgettable first acquaintance. For experienced connoisseurs — a curious, though controversial object for tasting and reflection.

The main recommendation when choosing Sui Yin Zi — responsible approach to purchase: verified seller, transparent information about producer, adequate price and critical evaluation of marketing claims. Real, honestly produced Sui Yin Zi from quality Lao Cha Tou is a worthy and interesting tea. But the market is flooded with production of questionable origin, and consumer awareness here is the best ally.