Yong Yang was lustful and extravagant, and had many concubines and treasures. One of them, Yun, was particularly favored because of her beauty. She gave birth to three sons and was treated as well in law as Du Gugaro, her mother and literary queen. Yong Yang's wife, Princess Yuan, was not allowed to be spoiled, so she was very angry and died two days later. Yong Yang immediately asked Yun to preside over the uterus.

Dugu Jialuo learned that Yong Yang and Yun Zhaoxun conspired to kill his wife, not only blaming Yong Yang, but also sending someone to investigate secretly. Yang Guang, the king of Jin, knew that his mother was dissatisfied with his younger brother, so he pretended that he had no concubine and only stayed with Xiao Fei. Therefore, Dugugarro hated Yong Yang more and praised Yang Guang's virtue.

Every time DuGuGao complains about YunChong, laments the untimely death of yuanshi county's monarch, and follows suit, which makes DuGuGao love more, and deliberately dethrones the Crown Prince and makes him the Crown Prince. Yong Yang was afraid of it, but there was nothing he could do. Emperor Wendi of Sui Dynasty knew his inner anxiety and sent Su Yang to observe him. As a result, Su Yang deliberately angered Yong Yang, making Yong Yang complain, and Emperor Wendi of Sui became more suspicious of him.

Dugu Gao, Yang Guang and others watched his every move, and they slandered Emperor Wen of Sui Dynasty. Besides, Yang Yong had many complaints, so Emperor Wendi of Sui Dynasty abolished Yong Yang as Shu Ren and made Yang Guang a prince. Until Wendi fell ill in Renshou Palace, Yang Guang acceded to the throne, and immediately forged Wendi's letters, giving Yong Yang a capital punishment.

Extended data:

Yong Yang is handsome, studious by nature, good at ci and fu, generous in character, gentle and frank, and unpretentious. His friends, including Ming Kerang, Yao Cha and Lu, were all literati at that time.

Once wearing a Shu armor, Emperor Wendi of Sui was worried that he was infected with luxury habits, so he specifically warned him. After the winter solstice that year, officials appeared in front of Yong Yang, and Yong Yang happily accepted their congratulations.

Emperor Wendi asked the courtiers, what kind of etiquette is this? Taichang Shao Qing Qi Xin said that the East Palace should only use greetings, not appear in court. Emperor Wendi of Sui Dynasty thought that Yong Yang had violated the etiquette, ordered his liegeman not to see Yong Yang again, and held an audience ceremony.

And the affection for Yong Yang is decreasing day by day, which increases the suspicion. Later, when Emperor Wen chose the bodyguard officer, he chose the strong army to his side.

Gao Jiong remonstrated that the guards protecting the Prince of the East Palace were too weak, which made Wendi quite unhappy. He thinks that Gao Jiong helped him because his son Gao Biaoren is Yong Yang's son-in-law, so he became more wary of him.

Baidu Encyclopedia-Yong Yang