Gu Xinyin

A Green Luan Academy Internal Study Department student and a Yunqin assassin.

Formed a relationship with a girl who was the daughter of the uncle of the current Tangcang emperor Xiao Xiang.

Xiao Xiang kills his daughter due to this relationship and formes a great enmity with Gu Xinyin.

Gu Xinyin is imprisoned in a water prison for - years.

Upon being released, Gu Xinyin kills Xiao Xiang with the help of Little monk Yun Hai.