was carried out at Gao Wei's orders. Gao Wei was intending to visit the secondary capital Jinyang (晉陽, in modern Taiyuan, Shanxi), which he and his predecessors did on a regular basis. The senior officials Cui Jishu (崔季舒) and Zhang Diao (張雕) -- who had been Gao Wei's teacher previously and respected by him—believed that for Gao Wei to go to Jinyang would be misinterpreted by the populace as a flight to Jinyang, and would lead to popular panic, so they, with a number of other officials—including Feng Xiaoyan (封孝琰), Liu Ti (劉逖), Pei Ze (裴澤), and Guo Zun (郭遵) -- submitted a joint petition requesting Gao Wei to stay at Yecheng. Han suggested that these officials were in fact intending to rebel, and Gao Wei agreed, executing Cui, Zhang, Feng, Liu, Pei, and Guo. He further exiled their clan members, confiscated their women, and castrated their boys. In spring 574, Gao Sihao (高思好) the Prince of Nan'an and governor of Shuo Province (朔州, roughly modern Shuozhou, Shanxi), angry that he had been disrespected by Gao Wei's servant Zhuogu Guangbian (斫骨光弁), rebelled. Gao Wei sent Tang Yong to resist Gao Sihao while personally leading the next army north, but before he could get there, Gao Sihao was defeated, and he committed suicide by drowning. Meanwhile, around this time, Gao Wei had become less attracted to Empress Mu, instead becoming more infatuated with Empress Mu's servant girl Feng Xiaolian, making her an imperial consort. They went everywhere together, and they swore to live and to die together. The historian Sima Guang, in his Zizhi Tongjian, had this to say about Gao Wei and his reign: The ruler of Qi was not a good speaker and could not speak clearly, and so he did not like to meet with governmental officials. He spoke nothing to anyone except his jesters and servants. He was weak in his personality and was fearful of people staring at him. Even the most honored officials or the head of the government were not allowed to look at him, and therefore the officials could only make summary reports and then withdraw in panic. He inherited the luxurious and wasteful living habits of Emperor Wucheng and thought that this was proper. All of the women and eunuchs of the palace dressed in the best silk and ate delicacies. It sometimes took 10,000 pi [匹, a measurement unit for textile]