Baizhu

Baizhu (Chinese: 白术 Báizhú) is a playable Dendro character in Genshin Impact.
The owner of Bubu Pharmacy and Qiqi's guardian, Dr. Baizhu is a master of the medicinal arts and the latest recipient of a generational contract with a white snake named Changsheng. He seeks to achieve immortality to ensure he is the last to ever bear his contract, saving potential inheritors and even Changsheng herself from the cost that comes with its power.