2. You must not teach an obedient child. -Sima Qian in the Western Han Dynasty, Historical Records, Stay in Hou Family. A child is foolish, so it is casting pearls before swine to reason with him.
3. You won't die until you reach the Yellow River, and you won't look back until you hit the south wall. -anonymous encyclopedia of famous sayings. Metaphorically, someone's behavior is stubborn and he can't listen to different opinions.
4. Zhou Lang's clever plan is to secure the world, losing his wife and losing his soldiers. -The Romance of the Three Kingdoms by Luo Guanzhong in the Ming Dynasty. Zhou Yu took the lead in marrying Sun Quan's sister to Liu Bei, took Liu Bei to Dongwu, and wanted to put him under house arrest to control Shu. As a result, Zhuge Liang found out and sent Zhao Yun to get Liu Bei back, and the soldiers Zhou Yu sent to intercept were also defeated by Zhao Yun. This is the second breath of Zhou Yu, the third breath. Now it is described that doing things not only failed but also lost money.
5. Ning Wuzi, if a country has a way, it will be wise, and if it has no way, it will be foolish. It can only be reached, but it is also stupid. -The Analects of Confucius in the Spring and Autumn Period. Ning Wuzi is smart when the country is too peaceful, but he pretends to be stupid when the country is in chaos. His cleverness can catch up with others' stupidity.