China people pay the most attention to etiquette, honesty and morality. Even ordinary people know that a friend's wife cannot be bullied. As for her father-in-law and daughter-in-law, it is even further. When it comes to the emperor who stole his son's wife, everyone immediately thinks of Li Longji, Emperor Xuanzong of the Tang Dynasty. Yang Guifei was originally the concubine of Li Mao, the son of Shouwang. Although Mr. Bai Juyi later turned it into a touching love story in Song of Eternal Sorrow, he even compared them to "We want to fly in the sky, two birds are one, and live and grow together on the ground, two branches of a tree." This still can't hide the essence of incest. In fact, robbing his son's wife is not a patent of Tang Xuanzong, but a precedent.

In 700 BC, Wei Weijin was "the first person to eat crabs". Wei was sexually promiscuous when he was young. He had an affair with his father's little wife and gave birth to a son named Wei. Because Wei was the result of incest, he had to be fostered among the people when he was a child. After Wei became king, his affair with was made public, and Wei was also named prince. When Wei 16 years old, Wei asked him to marry Xuan Jiang, the eldest daughter of the Duke of Qi. The emissary sent to visit relatives and friends in Qi said that Xuan Jiang's appearance was really beautiful. WeiXuanGong a listen to immediately rippling in the heart, have a bad idea. He ordered the construction of a luxurious palace on the bank of Qihe River and named it Xintai. Then let Wei go to Song State. When Wei Yi left, Wei sent someone to Qi to greet the bride, and directly welcomed Xuan Jiang to the new stage and took him as his concubine. When Wei came back from Song State, Wei asked Wei to meet Xuan Jiang in her common mother's week. Dad has cooked uncooked rice into mature rice, and Wei has to accept his fate. These emperors swept the world and did whatever they wanted. However, in the eyes of the world, I robbed my son's wife, which is always a joke.

I hope my answer is helpful to you.