Zi Sun tea, also known as Changxing tea, is a popular green tea produced in Changxing county, Huzhou in East China's Zhejiang province.[Photo/WeChat account: huzhoufabu] 

Zi Sun tea, also known as Changxing tea, is a popular green tea produced in Changxing county, Huzhou in East China's Zhejiang province. 

The tea became widely recognized as early as 1200 years ago. The name Zi Sun means "Purple Bamboo Shoot" in Chinese. It is so called because the unprocessed tea leaf is partially purple in color and its slim, narrow shape resembles that of a bamboo shoot.

The tea is harvested around the time of the Qingming Festival, and it takes half a month or 14 steps, before becoming a finished product.

In May 2011, the techniques used to make Zi Sun tea were listed as a national intangible cultural heritage item.