Rong Ziwan knew that Yi Linjun was a lunatic, because he not only made his concubine his concubine (the little princess born by his concubine is also likely to be his son), but he also treated his cousin somewhat differently. But Rong Ziwan never expected that Yi Linjun would be so crazy that he would bear the eternal infamy and make a betrothal gift for her with the country his ancestors had built.
He Daoyuan knew that Yi Linjun was a madman because Yi Linjun led his wolf to the Wei court and helped him annex his Wei kingdom. But He Daoyuan never expected that Yi Linjun would be so crazy as to use his own country as a chessboard and him as a chess piece. All of this was just a trick set up by Yi Linjun to rectify his "unsatisfied" country.
When Yi Linjun knew that he existed in the world as a madman, he was very angry. He felt that he was just a little forward-thinking, plus there were some misunderstandings that he felt no need to explain, and he didn't do anything crazy to the world! And... How could a madman be as handsome as him!
When Rong Ziwan saw those two people again many years later, they were wearing red clothes and black robes, sitting on the ridge of the field. One holds a hoe and the other drinks. The setting sun shrouds the sky, the warm wind intoxicates me, and the cuckoo crows. Even the empress who rules the world can only sigh - years (me) months (c) quiet (a) good (o).