In 591, Yang Zhan, the King of Teng, followed Emperor Yang Jian of Sui to Liyuan, but not long after news came out, Yang Zhan died violently! At that time, Chang'an City was shaken, and people rumored that Yang Zhan did not die of illness, but was poisoned by the wine. Yang Zhan was the younger brother of Emperor Yang Jian of Sui, and it was reasonable to say that the relationship should be good, but why did such rumors appear? It turned out that in the process of the change of the Northern Zhou and Sui Dynasties, Yang Zhan and Yang Jian became enemies, what was going on?
Yang Zhong and Lü Kutao had three sons, the eldest son Yang Jian, the second son Yang Zhen, and the third son Yang Zhan. Due to Yang Zhong's relationship, all three sons were reused during the Northern Zhou Dynasty. In the process of pacifying Northern Qi, the second elder Yang Was killed in battle, and Yang Jian was left with only Yang Zhan, a brother, and it was reasonable to say that the relationship between the two should be good, but he did not expect that things were not like that. Initially, the relationship between the two was not harmonious, mainly due to the two wives.
Yang Jian's wife is Dugu Jialuo, the daughter of Dugu Xin, and Dugu Jialuo is a strong person, and Yang Jian is very much in awe of her. Later, Yang Jian became emperor, still under the control of dugu Jia Luo, and was once angry to "run away from the palace". Yang Zhan's wife was Princess Shunyang, the daughter of Yuwen Tai, the founder of the Northern Zhou Dynasty. Because she was the sister of Emperor Wu of Northern Zhou, Princess Shunyang was also very strong, and in this case, the relationship between Concubines was poor, resulting in Yang Jian and Yang Zhen also having a grudge.
In 580, Emperor Xuan of Northern Zhou fell ill and died, and his closest ministers Liu Fang and Zheng Yi supported Yang Jian to assist him. Yang Jian deeply felt that his strength was not enough, and he remembered his brother, as the saying goes, "fight the tiger and kiss the brother.". Therefore, Yang Jian sent his eldest son Yang Yong to ask his third brother Yang Zhan to come out to help, "wanting to have a plan." Yang Jian did not expect in his dreams, but Yang Zhan categorically refused, and said coldly: "As the Duke of Sui, I am afraid that I can't protect it, so why should I destroy the evil of the clan?" ”
Later, Yang Jian still became an auxiliary chancellor, and he appointed his younger brother Yang Zhan to the posts of Grand General, Emperor Dazong, Shangzhu Guo, and Shao Guogong. At that time, there were still forces opposing Yang Jian in the DPRK, and Yang Zhan did not stand on the side of his brother, but in order to keep his family, "Yin had the plan of The Emperor Gaozu", that is to say, Yang Zhan wanted to kill Yang Jian and participated in the clique against Yang Jian. Yang Jian knew this, but he did not have a seizure, "Gao Zu every you tolerate it."
The reason why Yang Zhan launched Yang Jian's correctional assistance was, in addition to the reasons mentioned above, it was also related to the environment in which Yang Zhan was located. During the Northern Zhou Dynasty, because Yang Zhan was a donkey, he was reused. According to historical records, Yang Zhan was very handsome and a good book lover, so his reputation at that time was very good, "even famous in the world", and was called "Yang Sanlang". Emperor Wu of the Northern Zhou Dynasty also admired his brother-in-law Yang Zhan and was "very dear".
When Emperor Wu of Northern Zhou personally conquered Northern Qi, all the kings accompanied the army in battle, but only Yang Zhan was left behind to be responsible for the matters of staying behind. Emperor Wu of the Northern Zhou Dynasty also said to Yang Zhan: "The affairs of the six provinces are Yin, and one pays for each other." The emperor will do things in the east, and there will be no worries about the west. After Emperor Xuan of Northern Zhou ascended the throne, Yang Zhan was not persecuted, but was promoted. In this case, Yang Zhan supported the Northern Zhou court, and for Yang Jian, because of the brotherly relationship that had always been not harmonious, he was opposed to Yang Jian's usurpation of the throne.
Facts have proved that Yang Zhan's judgment is correct. After Yang Jian ascended the throne, although Yang Zhan was crowned king, he was in danger. The incident was still triggered by her wife, princess Shunyang "first had a disagreement with the LoneLy Empress, and this depression was uncertain, and the yin had curses." Yang Jian asked his younger brother Yang Zhan to divorce his wife, but Yang Zhan resolutely disagreed. In the end, although Yang Jian did not break up Yang Zhan and his wife, he expelled Princess Shunyang from the royal household. Yang Zhan was very dissatisfied with this, and it didn't take long for the opening scene to happen.
References: 1. Book of Sui; 2. Zizhi Tongjian