In 724, due to the machinations of Consort Wu, who had by then become Emperor Xuanzong's favorite concubine, Empress Wang was deposed, and she died shortly after. Thereafter, Consort Wu began a campaign, in association with the chancellor Li Linfu, to have her own son Li Qing the Prince of Shou made crown prince, but was not able to initially succeed. Meanwhile, in 726, Li Sisheng's title was changed to the Prince of Zhong, and his name was changed to Li Jun. In 728, his own mother Consort Yang Guipin died.