The second Heaven, Shang Ch'ing, is ruled by the second person of the triad, named Ling-pao T'ien-tsun, or Tao Chün.    From Wordnik.com.  [Myths and Legends of China] Reference

In the third Heaven, T'ai Ch'ing, the Taoists place Lao Tzu, the promulgator of the true doctrine drawn up by Ling-pao T'ien-tsun.    From Wordnik.com.  [Myths and Legends of China] Reference