The Three Pure Ones

San Qing: The Three Purities (or Pure Ones)

From the White Cloud Monastery (Baiyunguan) in Beijing, head temple of the Complete Realization (Quanzhen) sect.

This is the central deity of the Three Purities, the Celestial Worthy of Primordial Beginning (Tiancun Yuanshi). As his name implies, he is believed to have spontaneously formed from pure energy at the beginning of the world.

From the website of Professor Joseph A. Adler

http://www2.kenyon.edu/Depts/Religion/Fac/Adler/Reln472/Purities.htm