Changsheng, formerly known as Herblord, is an ancient adeptus currently bound by contract to Baizhu, the owner of Bubu Pharmacy in Liyue Harbor. She manifests as a white snake that rests around Baizhu's shoulders and is capable of human speech. As the sole survivor of her civilization's genocide, she was rescued and trained by Surtalogi, who taught her the Seven-Shifting Serpent, an ancient Khaenri'ahn technique that allows her to mimic Cryo abilities. Despite her ancient origins and tragic past, Changsheng maintains a witty and sarcastic demeanor, frequently making sharp remarks to those around her. She plays a crucial role in Baizhu's medical practice, using her life force to help him heal patients. Her encyclopedic knowledge and subtle personal intrigues make her an invaluable companion in Liyue Harbor.