Meng Chang
Later in the year, Meng became seriously ill. He left a will entrusting his son and crown prince Meng Renzan (whose name was later changed to Meng Chang) to the chancellor Zhao Jiliang, the senior generals Li Renhan and Zhao Tingyin, Wang, and the imperial guard generals Zhang Gongduo and Hou Hongshi (), and then died. The news of his death was not immediately announced, and Wang informed Zhao Jiliang first. As he did, he was weeping, and Zhao Jiliang pointed out that the state was not yet on firm grounds, and that the appropriate thing to do is to quickly support Meng Chang to take the throne. Wang apologized and agreed. Zhao then instructed him to inform Li and to observe Li's attitude (as both of them had suspicions that Li might be unwilling to serve a young emperor). When Wang reached Li's mansion, however, Li only met him after surrounding himself with armed guards. Wang therefore decided not to inform him of Meng Zhixiang's death, until after Meng Chang took the throne shortly after. (With Zhang and Meng Chang's close associates Han Jixun (), Han Baozhen (), and An Siqian () all suspecting Li as well, Meng Chang shortly after had Li arrested and put to death after consulting with Zhao Jiliang and Zhao Tingyin; Wang's involvement in the matter, if any, was not stated in history.) Meng bestowed on Wang the honorary chancellor title of "Shizhong" () and also gave him the title of military governor of Wutai Circuit (武泰, headquartered in modern Chongqing). (As with the case with other high-level Later Shu officials/generals at the time, Wang did not actually report to Wutai, but governed the circuit remotely through staff members.)