Although Su Yang was trusted by Emperor Wen of Sui Dynasty, his relationship with Yong Yang was general. During the period of Emperor Wendi of Sui Dynasty, Su Yang made great contributions in the war of conquering the south and invading the north, and his family was promoted because of him, so he was an important official. Yong Yang, as the Prince of the East Palace, has established his own team at this time, which makes Su Yang and Yong Yang hold important positions, but their relationship is average.
Yang Guang won the trust of Queen Dugu and wanted to use Su Yang to compete for the position of Chu Jun. As the second son of Emperor Wendi of Sui Dynasty and Queen Dugu, Yang Guang was a very talented person. I've always been very ambitious about the position of Prince Yong Yang, my eldest brother. But suffering from no way, under the guidance of the counselor, Su Yang's younger brother YueYang started. According to YueYang's gambling hobby, let his men lose all the gold, silver and jewels to YueYang, so as to close the relationship between the two sides. At the same time, YueYang suggested that if Yong Yang ascended the throne, it would be bad for Su Yang and his family, thus forcing Su Yang and YueYang to take refuge in Yang Guang's camp.
Yang Guang and others reached a tacit understanding and tried to abolish the status of Prince Yong Yang, but the result was unpredictable. After analyzing the situation, Su Yang and YueYang thought that only taking refuge in Yang Guang would have a bright future. Because Emperor Wendi of Sui and Queen Dugu have five sons, including Yong Yang, Yang Guang, Yang Xiu, Yang Jun and Yang Liang, it can be said that Yang Guang can abolish the position of Prince Yong Yang. Among so many half-brothers, who is the next heir of the Prince? Yang Guang really didn't know that this seat was his own, so it became a gamble between Su Yang and YueYang.