ziyang lucha

botany material

botany material x10: One bud with two leaves. Durability ≥4 infusions.

botany material x2: Historical name. Dense rolling, abundant down. Supreme grade — full buds (特级单芽, ≥90%). For 500 g requires ~1,000+ yuan.

botany material x3: Needle-shaped form, buds stand vertically in glass. From ultra-early varieties.

botany material x4: Created in the 1980s. Slender, with abundant down, fresh taste.

botany material x5: Mass pan-fired. Chestnut, strong, durable. From summer-autumn raw material.

botany material x6: Traditional "sun-dried". Sun-drying, yellow-green base, high durability.

botany material x8: Full buds ≥90%. Fine rolling, down, chestnut aroma. Amino acids ≥5.69%, selenium ≥0.3 mg/kg.

botany material x9: One bud with one leaf (≥80%). Water extract ≥32%.

cultivar: Primary — Zǐyáng Zhūyè Qúntǐzhǒng (紫阳槠叶群体种, Zǐyáng Zhūyè Qúntǐzhǒng) — indigenous small-leaf and medium-leaf variety of Camellia sinensis var. sinensis from sexual reproduction. In 1965, recognized by China's Ministry of Agriculture as one of 21 national exemplary cultivars — the highest status for a tea variety. Distinguished by early vegetation onset and high resistance to adverse conditions. Additionally: Zǐyáng Dayepao (紫阳大叶泡, large-leaf type) and Zǐyáng Lyezhong (紫阳柳叶种, "willow leaf", medium-leaf). Chemical profile of fresh leaf: amino acids — 3.08–5.69%, polyphenols — 30.35%.

pluck standard: Three grades:

brewing

brewing x4: do not use boiling water (>85°C) — destroys amino acids and increases bitterness. Newly purchased tea should rest 1–2 weeks for "fire taste" to dissipate. Daily norm — ≤3 cups (for caffeine intake control).

tea amount: 3 g per 150 ml water (1:50 ratio). For supreme grade — top-down method (上投法, water first, then tea).

teaware: Glass tumbler (for observing silver needles "dance") or white porcelain gaiwan.

water temp: 80–85°C; for silver needles (银针) — 75°C.

chemistry

alkaloids: Caffeine — moderate content.

amino acids: 3.08–5.69% — wide range, depending on variety and harvest time. Supreme grade reaches record 5.69%.

chemistry x2: 0.15–3.853 mg/kg — 5.5 times higher than average for tea regions. Selenium is a powerful antioxidant participating in glutathione peroxidase synthesis; organic selenium from tea is absorbed better than inorganic.

chemistry x3: ≥32% — indicator of taste richness.

minerals: Potassium, magnesium, zinc, manganese, selenium, phosphorus.

polyphenols: 30.35% — significantly above average. Provides powerful antioxidant potential.

vitamins: Vitamin C, carotenoids.

classification origin

category: National Geographical Indication Product (国家地理标志产品, 2004). In 2020 — inclusion in the list of China-EU mutually recognized geographical indications (中欧地理标志互认名单). In 2024 — special gold award at the Panama Exhibition (美国巴拿马万国博览会特等金奖). Historical "tribute tea" (贡茶) of the Tang dynasty. Tea industry volume (2023): 25,000 mu (16,700 hectares) of tea gardens, total value — 6 billion yuan.

coordinates: 108°33′—110°12′ East longitude, 28°24′—28°36′ North latitude.

origin: China, Shaanxi Province (陕西, Shǎnxī), Ānkāng City (安康市, Ānkāng Shì), Zǐyáng County (紫阳县, Zǐyáng Xiàn). Geographical indication zone — 20 townships and villages of the county. Terroir core: townships of Huàngǔ (焕古镇), Chengguan (城关镇), Xiàngyáng (向阳镇), Hongchun (红椿镇) and Haoping (蒿坪镇) — at elevations of 350–900 m, in the basins of the Hànjiāng (汉江) and Rènhé (任河) rivers, where ancient tea gardens from the Ming and Qing dynasties are concentrated.

type: Green tea (unoxidized). Produced in several forms: needle-shaped (紫阳银针, "Ziyang Silver Needle"), eyebrow-shaped (紫阳毛尖, "Ziyang Hairy Tip"; 紫阳翠峰, "Ziyang Emerald Peak"), straight (紫阳炒青, "Ziyang Pan-fired"), as well as traditional "sun-dried" (紫阳晒青/陕青茶, "Shaanxi Sun-dried Green").

comparison

comparison x0: From Anhui. Also high-selenium (0.70–3.85 ppm, ×5.5). Orchid-chestnut. Te Jian — more orchid-like; Ziyang — more chestnut-powerful and with more ancient history.

comparison x1: From Henan. Also "northern" green tea. Xinyang — more needle-like, with "double wok" technique; Ziyang — with more diverse lineup (5 types) and selenium advantage.

comparison x2: From Shaanxi (Hanzhong). Provincial neighbor. Hanzhong — more "southern" in character (southern slope of Qinling); Ziyang — more "mountainous" and chestnut-mineral.

comparison x3: From Hubei. Also selenium-rich, but — steamed (蒸青), with "Japanese" character. Yu Lu — more marine and "umami"; Ziyang — more chestnut and "continental".

health

health x0: Organic selenium blocks nitrosamine synthesis (carcinogens), free radical neutralization efficiency — 10 times higher than vitamin C.

health x1: Polyphenols reduce lipid synthesis enzyme activity, improve arterial condition — effect 30% higher than ordinary green tea.

health x2: Organic selenoprotein increases lymphocyte activity, reducing cardiovascular disease risk.

health x3: Double effect — polyphenols + selenium.

health x4: Caffeine and L-theanine.

health x5: listed properties are based on publicly available data and are not medical recommendations.

history culture

cultural significance: Ziyang is a unique "tea bridge" between South Chinese and Central Asian civilizations: tea from the southern slope of Qinling went west along the Silk Road and north through the "tea for horses" system. For modern Ziyang, tea is the economic backbone (6 billion yuan total value) and cultural symbol. The selenium profile gives the tea a unique "healthy" brand — "medicine for longevity" (延年益寿的良药).

history: Ziyang Lu Cha is one of China's most ancient teas with documented history exceeding 3,000 years.

organoleptic

dry leaf appearance: Plump, sturdy shoots (肥嫩壮实). Color — bright emerald green (色泽翠绿). Forms: needle-shaped (银针), eyebrow-shaped (毛尖, 翠峰), twisted (炒青). Down — abundant in supreme grades.

dry leaf aroma: Chestnut (栗香, lì xiāng) — primary and most pronounced note. Pure green freshness (清香). In supreme grades — delicate aroma of young buds (嫩香).

liquor aroma: Chestnut, persistent and deep.

liquor color: Tender green, bright and clear (嫩绿明亮).

spent leaves: Tender, uniform shoots, gathered in "buds" (嫩匀成朵, for supreme class); yellow-green (for mass varieties).

taste: Formula "浓而不涩，醇厚回甜" — "concentrated but not astringent, mellow and sweet". Fresh (鲜爽) — amino acid note (up to 5.69%). Mellow (醇厚). Returning sweetness — persistent. Brewing durability — high.

price counterfeit

price counterfeit x1: authentic Ziyang Lu Cha should contain ≥0.15 mg/kg selenium. Demand certificate.

price counterfeit x2: persistent chestnut tone — trademark sign. Weak or "grassy" — suspicious.

price counterfeit x3: concentrated but not rough. Rough astringency — sign of southern raw material substitution.

price counterfeit x4: suspiciously low — sign of counterfeit.

production

production x0: Up to 8 hours.

production x1: At 130°C, with alternating tossing and shaking (抛抖结合, pāodǒu jiéhé).

production x2: Light pressure, 4–8 minutes.

production x3: Pre-drying.

production x4: Gentle heating.

production x5: On charcoal (木炭烘焙) to moisture content ≤7%. Charcoal drying "locks selenium" (锁硒, suǒxī) — prevents loss of organic selenium during high-temperature processing.

production x6: Complete ban on pesticides and chemical fertilizers. Application of AI technologies (人工智能) for precise temperature control during aroma development (提香).

terroir

altitude: 280–2,522 meters above sea level. Core — 350–900 m.

climate: Subtropical monsoon. Average annual temperature — 15.1°C, annual precipitation — 1,127.8 mm. Average annual number of foggy days — >180. Daily temperature variations — >10°C. Diffused light stimulates amino acid accumulation.

soil: Yellow-brown soils (黄棕壤, huáng zōng rǎng), pH 4.5–6.8. Organic matter content — 1.68%. Key feature — record selenium content: average — 0.49 ppm, maximum — 3.98 ppm. Selenium comes from geological rocks of the Qinling range — China's "selenium belt".

terroir x0: Northern slope of the Qinling-Bashan range (秦巴山区北麓) — border between Northern and Southern China. 32nd degree North latitude.

terroir x4: Forest coverage — 55.7%. Negative air ion concentration — 30,000/cm³ — one of the highest indicators in the country. Industrial pollution — absent.