Xi Qinghai is the Young Palace Master of the Western Extreme Palace. He wears a green robe, just like his father, the Western Extreme Sovereign and lives in the Western Desolated City. When Mo Longzi attempted to use the Northern Heavens Spiritual Academy's Heavenly List as a stepping stone for fame to rise above Mo Xingtian, Xi Qinghai watched the battles from afar, guessing who the outcome, however with Mu Chen defeating Wu Jia, his predictions were turned on their head before watching Mu Chen defeat Mo Longzi with incredulity.
Xi Qinghai was a participant in the Divine Spiritual Mountain, where in the crescendo, he sided with Mu Chen, Xia Youran and Su Buxiu against Mo Xingtian, and subsequently managed to to obtain the best Divine Spiritual Baptism at the highest step in the Nine Heavenly Steps.