completed. In the first year of his reign, a precursor to the Nanking Imperial University was established, with Wei Zhao being the first president. In 260, Sun Xiu, who had always been concerned about plots regarding his brother, deposed Emperor Sun Liang, acted after receiving false reports that Sun Liang had used witchcraft. He had Sun Liang demoted from the status of Prince of Kuaiji to Marquis of Houguan and sent him to his marquisate (in present-day Fuzhou, Fujian). Sun Liang died en route to Houguan – with the popular belief being that he committed suicide, but with some historians believing that Sun Xiu poisoned him. The Wu official Xue Xu, who visited Wu's ally state Shu Han in 261, provided a description of Shu to Sun Xiu upon his return as follows: Historians largely believe that Xue Xu was not just referring to Shu, but rather using Shu's situation as an allegory to warn Sun Xiu that Wu was in a similar situation. Sun Xiu did not seem to have understood what Xue Xu meant. In 262, Sun Xiu instated his wife Princess Zhu as the empress. He also designated his eldest son, Sun Wan, as the crown prince. In 263, due to the corruption of the commandery governor Sun Xu (), the people of Jiaozhi (交趾; present-day Hanoi, Vietnam) rebelled, and they were joined by the people in the neighbouring Jiuzhen (九真; modern Thanh Hóa, Vietnam) and Rinan (日南, modern Quang Tri, Vietnam) commanderies. The rebels also sought military assistance from Wu's rival state, Wei. (Wei and its successor state, the Jin dynasty, did provide assistance to the rebels. Besides, the rebellion was not suppressed until 271, some years well into the reign of Sun Xiu's successor, Sun Hao.) In 263, when Wu's ally state Shu came under attack by their rival state Wei, they sought assistance from Wu. Sun Xiu sent two separate armies – one to attack Shouchun (present-day Shou County, Anhui) and the other to attack Hanzhong Commandery – to distract the Wei army and force them to withdraw from Shu. However, both armies never succeeded in their mission. The Shu emperor Liu Shan surrendered to Wei later that year, thus bringing Shu's existence to an end. When Sun Xiu heard that some former Shu commanderies were at a loss on what to do after Liu Shan's surrender, he sent his troops in an attempt