Introduction to Renshou Palace: Renshou Palace is the fourth palace. Entering the door and passing through the hall, you can worship the longevity star. The longevity star is an Antarctic immortal. The meat ball in front of the forehead is responsible for longevity. The main hall is Laojun Hall, which is dedicated to Taishang Laojun (Li Er, also known as Li Ran), whose classic work is the Tao Te Ching. The east side hall is the Medicine King Hall, dedicated to the Medicine King Sun Simiao.