When did Uncle Jiu know the identity of the hostess?

Jiu Shu took a bath with her and found that she was a woman.

You are my restless heart, written by kitten.

Protagonist: Qin Qin, Zhan Qing

Introduction: Qin Qiao, pretending to be timid, was forcibly taken to the military camp by the war machine to practice hard. Wear a corset during the day to prevent her from being found disguised as a man.