C91 The Value of Cao Yeqing

"About me practicing the chant, it's a secret between the three of us. Ye Qing, Sai, and the others, don't tell anyone else about this. "Ye Qing, don't tell this secret of yours to anyone else in case you cause unnecessary trouble." Lin Qing Shan thought for a while before she spoke to Cao Ye Qing and Tong Xi Nan.

In this world, the incantation for battle qi was very important