Gu Zhu Zi Sun is produced in Changxing County of Zhejiang. It is made by the tea from a tea cultivar Zisun. And Guzhu is the name of a town in Changxing County. So It is named. It has been a Chinese famous tea since Tang Dynasty.
The 2018 crop Gu Zhu Zi Sun is just produced.
Changsha Wufeng Tea Co.,Ltd