Bai Feng swung his sword to parry, but the force drove him back several paces. To his shock, Xu Shuyin's current strength was comparable to that of a peak Nascent Soul cultivator!
"She's been eroded by the soul bodies of the Void Realm," Bai Feng said, his voice bitter. "But why can she still use the bone flute?"
Hearing this, Xu Shuyin let out a cackle and affectionately stroked the bone flute. "I was originally part of the key. That great battle in Inner Kunlun three hundred years ago was fought precisely to forge 'vessels' like us."
Chapter 839