Yang Yong, the eldest son of Yang Jian, the founding emperor of the Sui Dynasty, had a life full of dramatic twists and turns. He was once the heir to the throne, but ultimately was deposed to a commoner. What were the reasons behind this?

Yang Yong's mother, Dugu Jialuo, was Yang Jian's queen, and he was made crown prince soon after his birth. However, Yang Yong's personality was vastly different from his father's. He was timid and inexperienced in political struggles, which was something that Yang Jian could not tolerate. Yang Jian was an extremely shrewd politician who needed an heir who could inherit his political wisdom and cunning, and Yang Yong clearly could not meet his expectations.

In addition, Yang Yong's marital issues were also a significant reason for his deposition. His wife, Yuan Shi, was a relative of Dugu Jialuo, which put Yang Yong in a politically passive position. Yuan Shi's father, Yuan Hui, was a member of the royal family of the Northern Zhou Dynasty, and he hoped to consolidate his position through his daughter's marriage. However, Yuan Shi was not favored, which made Yang Yong even more politically isolated.

Finally, the rise of Yang Yong's younger brother, Yang Guang, was also an important reason for his deposition. Yang Guang was an extremely shrewd politician who successfully usurped the throne through various means. In this process, Yang Yong was completely excluded, and his power was gradually weakened until he was deposed to a commoner.

Overall, the reasons for Yang Yong's deposition were multifaceted, including his personality, marital issues, and the rise of his younger brother Yang Guang. This was a complex historical event that reflected the cruelty of power struggles and political struggles within the Sui Dynasty.

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