Wu Sansi
In 705, Wu Zetian was overthrown in a coup, and Li Xian, formerly emperor, was restored to the throne (as Emperor Zhongzong). Song Jing became the deputy minister of civil service affairs (), and as Emperor Zhongzong favored Song for his morals, he also gave Song the title of imperial consultant (諫議大夫, "Jianyi Daifu"). Soon thereafter, he was made "Huangmen Shilang" (), the deputy head of the examination bureau of government (門下省, "Menxia Sheng"). At that time, Wu Zetian's nephew and Emperor Zhongzong's cousin Wu Sansi the Prince of Dejing, who was also the lover of Emperor Zhongzong's powerful wife Empress Wei, was very powerful. On one occasion, Wu Sansi made a request to Song and Song sternly rejected, stating: