Song of Qin and Phoenix

Xianxia×Substitute×Sisterhood The elder sister is the bloodline of the sect leader, and the younger sister is just the chosen substitute. My sister thought she had everything, but in the end she had nothing. Once her identity is exposed, her sister transforms into a black phoenix and asks Ba Ling to fight. My sister sacrificed her cultivation to awaken her. You are a substitute, but you are also my sister. "Sister, I don't want anything anymore, I just ask you to come back..."