The Heaven-Earth Rings were a set of two: Yin Ring to protect against the powerful Greatnorth Essence Lights and Yang Ring to control them. Yang Ring pulls in the Greatnorth Essence Light and shoots a silver wave at the target.[1025]
The Heaven-Earth Rings are helpful with entering Devilfall Valley[726] [815] and Kunwu Hall[1022], where Greatnorth Essence Lights exist.
Han Li obtained Yin Ring from one of Master Cang Kun’s 6 Jade Boxes’ Treasure, and Yang Ring from Nangong Wan’s Senior Martial Sister.