• On the surface, Su Yu is a gentle young man, but he secretly cultivates the "Shadow Guards" of dead soldiers, and uses the "red sleeve tactics" of brothels to establish an intelligence network
• Entered into a marriage contract with Ye Qingyi, the legitimate daughter of the Ye family. In fact, both families are infiltrating each other.
• The princelings and the Qi royal party competed for the throne, and Su Yu was forced to get involved.
