C1446 Thunder Method

What does that mean?

Turn hostile and refuse to acknowledge the debt?

Ao Qingxin: You clearly promised me before.

Always Drilling Wind: Fourth Princess, I think you misunderstood! I can teach you within the mission, but after the mission ends, the obligation I have to teach you also ends. Learning the zither and alchemy is another price!

Ao Qing Xin: You... Hmph! Forget it