Kang Zhuan
Kang zhuan is a Sichuan border-tea brick, part of the 'south road border tea' (nan lu bian cha) made in and around Ya'an for the Tibetan market, its name nodding to the old Xikang region of eastern Tibet. It is built from coarse, mature leaf and stem, heavily fermented and pressed hard, designed to be boiled into the salted butter tea of the Tibetan plateau. What matters most is recognizing it as a robust, utilitarian Tibetan tea rather than a sipping connoisseur grade.
Kang zhuan is intentionally coarse, so judge cleanliness and depth, not tenderness. Expect a hard brick of mature dark leaf with visible stem, a deep-brown liquor, and a smooth, woody, mellow character with low bitterness thanks to heavy fermentation. The hallmark of good Sichuan Tibetan tea is roundness and very little sharpness even from rough material. Sour or moldy notes are faults, while a faintly smoky, earthy depth is normal.
Ya'an in Sichuan is the historic center, with a tea-for-horses trade to Tibet stretching back over a thousand years along the cha ma gu dao (tea horse road). Kang zhuan is one of the pressed grades of this south road border tea, alongside the related jin jian; the leaf is mature and stalky, given repeated piling and fermentation before pressing. It is essentially a brick format of Ya'an Tibetan tea, made to specification for plateau consumption.
Gongfu: 6-8 g per 100 ml, 95-100°C, one or two rinses, then 10-20 second steeps extending gradually. Western: 4-5 g per 250 ml, 95-100°C, 3-4 minutes. The brick is hard, so break it carefully. Traditionally it is boiled or simmered for an extended time and churned with butter and salt, or taken with milk, rather than flash-steeped.
€3-15 (about $3-16) per 100 g; a commodity border brick, rarely a collector item.
Prices reviewed June 2026
Zang Cha (Tibetan Dark Tea)
Zang cha is the broad Ya'an Tibetan dark tea category; kang zhuan is one specific pressed brick grade within it.
Qing Zhuan
Both are coarse border bricks, but kang zhuan goes south and west to Tibet while qing zhuan went north to Mongolia and Russia.
Hei Zhuan (Black Brick)
Hei zhuan is the Hunan black brick for the northwest trade; kang zhuan is the Sichuan brick for the Tibetan trade, a parallel utilitarian dark tea.
Young Shou (1-5 years)
Ripe puerh shares the dark, smooth, low-bitterness profile but reaches it through Yunnan wet-pile fermentation, not Sichuan border-tea processing.
Kang zhuan is one of the teas that literally moved on the tea horse road, the centuries-old route that traded Sichuan brick tea for Tibetan horses; its heavy fermentation and mature leaf were practical choices for a tea meant to be boiled with butter at high altitude.