Mysterious Medicine in Prosperous Times

I have a thought that kills me from heaven. I have a practice to compete in the world. The mountain gate was destroyed and his master was killed. Li Xuansheng was a mercenary. Later, he was injured and rescued by a traveling mountain gate master. He was brought back to the sect for medical treatment and became his teacher. In the valley, Li Xuansheng was used to such a life. But one day, an uninvited guest prevented Li Xuansheng from spending the rest of his life in peace and had to enter the world again... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.