Choice of Rebirth

Qin Si, who was in great danger, was rescued by the "King of Medicine", the sage who was once ranked number one in the world. And the method of rescue actually starts from the secret teachings and is taught step by step. Twenty-three years have passed, and the "King of Medicine" has been missing for many years, but his body is still unresolved. As a reborn person, does the "King of Medicine" really want to save his life, or...