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Qing Xin (青心), literally "green heart" is a famous cultivar used in Taiwan and, more recently, also in Thailand, Vietnam and China. The cultivar probably originates from Anxi and was brought to Taiwan by tea farmers. This tea variety is used to produce some famous highland Oloong teas (Gao Shan Cha) such as Dong Ding, Oriental Beauty, Pouchong, Qing Xin.
According to some sources are Qing Xin and Ai Jiao the same cultivar.