```html
When Chu Zhiyuan returned to the Listening Wave Pavilion for a noon rest, he lay on the couch, still thinking about how to deal with Song Tianhai before sleep.
If Song Tianhai had directly challenged him, he would not have been angry.
Not directly attacking him but instead dealing with his younger sister Chu Yi, involving family members, made him especially hate it, deciding to severely deal with Song Tianhai.
However, since Song Tianhai was a young Duke and a guerrilla general in the army, dealing with him would require some thought and consideration.
The court has its own laws, and the princely heir cannot completely ignore the laws, doing whatever he wants, hitting whoever he wishes.
He must act according to the law and occupy a justified position.