God's Turning Point

Yun Baishu loves Qianxun extremely, but inadvertently becomes the inner demon of the inner sect fairy Feng Caiyi. Qianxun loves Mo Wen, but does not expect that during the inner sect trial, Mo Wen betrayed her with a vicious heart. Seeing her lover turn into a friend, why did Feng Caiyi, who loved Yun Baishu, kill Yun Baishu when she was entangled with him in the end? What is Yun Baishu's true identity?