Information: - Yuwen Huaji (died 619) was a general of the Chinese Sui Dynasty who, in 618, led a coup against Emperor Yang of Sui, killing him. He subsequently declared Emperor Yang's nephew Yang Hao emperor and led Emperor Yang's elite Xiaoguo Army () north, but was then repeatedly defeated by Li Mi, Li Shentong (), and finally Dou Jiande. Believing that his defeat was near and wanting to be emperor before his ultimate defeat, he poisoned Yang Hao and declared himself the emperor of a Xu state. Dou captured him in 619 and killed him. - Yang Jun ( ) ( 571 -- 600 ) , nickname Azhi ( ) , formally Prince Xiao of Qin ( ) , was an imperial prince of the Chinese dynasty Sui Dynasty . He was a son of Emperor Wen ( Yang Jian ) and his wife Empress Dugu , who died as a result of an illness caused by poisoning by his jealous wife Princess Cui . His son Yang Hao was later briefly declared emperor by the general Yuwen Huaji after Yuwen killed his brother Emperor Yang in 618 . Yang Jun was born in 571 . He was the third son of Yang Jian and Dugu Qieluo , after Yang Yong and Yang Guang . When Yang Jian seized the throne from Emperor Jing of Northern Zhou in 581 , ending Northern Zhou and establing Sui Dynasty as its Emperor Wen , he created his sons princes , and Yang Jun was created the Prince of Qin . In 582 , Yang Jun , at age 11 , was made the governor of Luo Province ( , roughly modern Luoyang , Henan ) and titularly the commander of the armed forces east of the Hangu Pass . In 583 , he was made the commandant at Qin Province ( , roughly modern Tianshui , Gansu ) and was in charge of the surrounding provinces . It was around this time that Yang Jun began to be a devout Buddhist and became known for his kindness , and at one point he requested permission from Emperor Wen to become a monk , a request that Emperor Wen denied . In 586 , Yang Jun became the regional executive of the provinces south of the Qinling Mountains and was stationed at Xiangyang ( , in modern Xiangfan , Hubei ) . It was around this time that his wife Princess Cui ( the sister of the general Cui Hongdu ( ) ) gave birth to his first son Yang Hao . In 588 , when Emperor Wen launched a major attack against rival Chen Dynasty , Yang Jun was stationed at Hankou ( , in modern Wuhan , Hubei ) and made the commander of the Sui forces in the middle Yangtze River region . The Chen general Zhou Luohou ( ) soon arrived to guard against Yang Jun , but Yang Jun , disliking the idea of major battle losses , chose not to engage Zhou , and they stalemated . Nevertheless , this stalemate... - Emperor Yang of Sui (, 569 April 11, 618), personal name Yang Guang (), alternative name Ying (), nickname Amo (), known as Emperor Ming () during the brief reign of his grandson Yang Tong), was the second son of Emperor Wen of Sui, and the second emperor of China's Sui dynasty. - Dou Jiande (573 August 3, 621) was a leader of the agrarian rebels who rose against the rule of Emperor Yang of Sui near the end of the Chinese Sui dynasty. Generally considered the kindest and most able of the agrarian rebel leaders of the time, he was eventually able to capture the modern Hebei region and declare himself initially the Prince of Changle, and then the Prince of Xia. In 621, when the Tang dynasty general Li Shimin (later Emperor Taizong) attacked Wang Shichong the Emperor of Zheng, who ruled the modern Henan region, Dou believed that if Tang were able to destroy Zheng, his own Xia state would suffer the same fate, and therefore went to Wang's aid, against the advice of his strategist Ling Jing () and his wife Empress Cao. Li defeated him at the Battle of Hulao, capturing him. Li's father Emperor Gaozu of Tang subsequently put Dou to death. Xia territory was briefly seized by Tang, but soon Dou's general Liu Heita rose against Tang rule, recapturing Dou's territory, and held out against Tang until 623. - The Sui Dynasty was a short-lived imperial dynasty of China of pivotal significance. The Sui unified the Northern and Southern dynasties and reinstalled the rule of ethnic Han Chinese in the entire China proper, along with sinicization of former nomadic ethnic minorities within its territory. It was succeeded by the Tang dynasty, which largely inherited its foundation. What is the relationship between 'yang jun ' and 'emperor wen of sui'?
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father