Nan Yan Palace Tian Yi Zhen Qing Palace Hai Deng

Hai Deng. One of the five major offerings in Taoism, also known as the ever-burning lamp, is mostly made by the imperial family. Copper cast and gilded, with a huge volume. It is recorded that the royal family supplies 4,320 jin of oil and 300 jin of yellow wax to the ever-burning lamps on Wudang Mountain every year.