Shi was to take Cuan to Chang'an to be presented to Emperor Wen, but Cuan bribed Shi, and so Shi allowed him to stay. Also in 597, Li Guangshi (), the chief of the aborigine people in Gui Province (桂州, roughly modern Guilin, Guangxi), also rebelled. Emperor Wen sent the generals Wang Shiji () and Zhou Fashang () against Li, and Zhou was able to defeat and kill Li. However, in the fall, Li Shixian (), who might have been related to Li Guangshi, rebelled at Gui Province, and Emperor Wen sent Yu Qingze the Duke of Lu to attack Li Shixian; Yu was successful in suppressing the rebellion. Subsequently, however, Yu's brother-in-law Zhao Shizhu (), who had an affair with Yu's concubine, falsely accused Yu of treason, and around the new year 598, Yu was executed. Also in 597, Emperor Wen felt that the punishment for official misconduct was too light, and authorized that supervising officials would be permitted to batter their subordinates with large canes if they felt that the legally prescribed punishment was too light in comparison to the degree of misconduct. Further, also believing that there was too much theft and robbery throughout the realm, he increased the punishment for theft to death—a law that he subsequently abolished. Also in 597, Emperor Wen's son Yang Jun the Prince of Qin, the commandant at Bing Province (并州, roughly Taiyuan, Shanxi), was poisoned, but not to death, by his jealous wife Princess Cui. After Yang Jun was taken back to Chang'an for treatment, Emperor Wen discovered that Yang Jun had been wasteful at his post, and removed him from all of his offices, allowing him to only retain the title of imperial prince. When Princess Cui's poisoning was discovered, Emperor Wen ordered Yang Jun to divorce her, and subsequently ordered her to commit suicide. When Liu Sheng () and Yang Su suggested that the punishment against Yang Jun was overly severe, Emperor Wen responded to Yang Su: I am the father of just five sons, not the father of all people over the land. If I agreed with you, does that mean I have to draft a Penal Code for the Emperor's Sons? Even a man as kind as the Duke of Zhou executed his brothers, the lords of Guan and Cai, for their crimes. I am nowhere as capable as the Duke of Zhou, so I can