Black tea originated in Anhua, and was first produced in Baozhiyuan, which is near the Zijiang River, and then conveyed to Yashengping, Huangshengping, Selezhou, Jiangnan, Xiaoyan and other places along the Zijiang River, with Jiangnan as the concentrated place, and Gaojiaxi and Majia as the most famous quality. In the past, Hunan black tea was concentrated in Anhua production, but now the production area has expanded to Taojiang, Yuanjiang, Hanshou, Ningxiang, Yiyang and Linxiang.
Heizhi tea is divided into four grades, the high-grade tea is tender and the low-grade tea is coarse and old.
the first-class tea strips are tightly coiled, round and straight, with tender leaves and dark and moist color.
the second-grade tea strips are still tight, and the color is dark, brown and moist.
The third-grade tea strips are not tight, showing loach autumn, and the color is pure with bamboo green, purple oil or willow blue.
The fourth-grade tea is thick and old, with loose, flat and wrinkled strips and yellow-brown color. Hunan black hairy tea requires fragrance and no rough and astringent taste. Flower brick tea, Fuzhuan brick tea and Xiangjian tea are mainly sold in Xinjiang, Qinghai, Gansu, Ningxia and other provinces.