This classic comes from Zuo Zhuan who lived in seclusion for three years: "I love my son, teach him to be righteous, accept evil, be arrogant and extravagant, and be evil."
During the Spring and Autumn Period, Zhou Xu, the second son of Wei Zhuanggong, Wang Wei, was born to Zhuang Gong's favorite concubine. Because he was deeply loved since he was a child, he didn't like reading, so he was unruly and overbearing, and Zhuang Gong let Zhou Xu's behavior go. Dr. Shi Jie, a health doctor, advised Zhuang Gong: "I heard that a person loves his son and should educate him in a proper way to prevent him from going astray." Such arrogant, conceited, excessive and willful behavior as Zhou Xu, the son, can easily go astray. Why is this happening? I think it's caused by your overindulgence. ..... A person can love but not be proud, or although he is a little arrogant, he can control it. Although he has resentment, there are too few people who can hold on to himself. ..... Parents should love their children, children should be filial to their parents, brothers should love their younger brothers, and younger brothers should respect their younger brothers ... "Zhuanggong didn't listen to Ding Wei's advice, and as a result, Xu Zhou really killed his younger brother and became a monarch.