the Song dynasty, the post of chancellor was also known as the "Tongpingzhangshi" (同平章事), in accordance with late-Tang terminology, while the vice-chancellor was known as the jijunsi. Some years later, the post of chancellor was changed to "prime minister" (首相 shou xiang) and the post of vice-chancellor was changed to "second minister" (次相 ci xiang). In the late Southern Song dynasty, the system changed back to the Tang naming conventions. During the Mongol-founded Yuan dynasty, the chancellor was not the head of the Secretariat, but the Crown Prince (皇太子) was. After the establishment of the Ming dynasty, the post became the head of the Zhongshu Sheng again. The post was abolished after the execution of Hu Weiyong, who was accused of treason (though his conviction is still strongly disputed in present times because of a lack of evidence to prove his guilt). Still, appointments of the people who held the highest post in the government were called "appointment of prime minister" (拜相) until 1644. Influence During and after the Mongol-led Yuan dynasty, the Mongols continued the use of a title Chingsang, from Chengxiang (丞相) for various high leaders, such as Pulad, the Yuan ambassador to the Ilkhan and for the deputy of the Western Mongol leader, the taishi. The title was also used in the Ilkhanate, for the vizier Buqa. List of chancellors of China see also List of chancellors of Shang dynasty Zhou dynasty Jiang Ziya Duke of Zhou Duke Huan of Zheng Duke Zhuang of Zheng Guan Zhong of Qi state (died in 645 BC) Bao Shuya of Qi state Yan Ying of Qi state Fan Li of Qi State and Yue state Wu Zixu of Wu state Bo Pi of Wu state Cheng Dechen of Chu state Sunshu Ao of Chu state Wu Qi of Chu state Lord Chunshen of Chu state Lord Mengchang of Qi state Tian Dan of Qi state Li Kui of Wei state Hui Shi of Wei State Lin Xiangru of Zhao state Li Mu of Zhao state Su Qin of Yan state Yue Yi of Yan state Baili Xi of Qin state Shang Yang of Qin State Zhang Yi of Qin State Qin dynasty Fan Ju Lü Buwei (251–238 BCE in office) Lord Changping Kui Zhuang Wang Guan Li Si (?–208 BCE in office) Feng Quji Zhao Gao (208–207 BCE in office) Han dynasty Xiao He (206–193 BCE in office); Chen Xi