The one controlling Tang Xin has always been the leader of the Xuan Ji Sect. Xiao Lang and Tang Xin go find the Xuan Ji Sect leader to get revenge, but get captured instead. Yu Ying Nan expresses her love, but he only leaves because he doesn't want to tell her the truth about destroying the magic stone. Xuan Ji Sect leader tricks Yu Ying Nan so they can take the magic stone. But Zhang Wen Tian and the Xuan Ji Sect leader fight amongst themselves. A Tu also wants the magic stone for himself. (Source: jindreame at MyDramaList)