高力士
As of 747, Yang Zhao was serving as "Shi Yushi" (), an imperial censor, when Li Linfu wanted to accuse the official Yang Shenjin () of crimes. He thus engaged Yang Zhao to have Yang Zhao inform Yang Shenjin's cousin's son Wang Hong (), who resented Yang Shenjin for still viewing him as a junior member of the family, of Emperor Xuanzong's displeasure with Yang Shenjin over Yang Shenjin's involvement with a sorcerer named Shi Jingzhong (). Li Linfu then induced Wang to make accusations against Yang Shenjin, who was a descendant of Sui emperors, of plotting to overthrow Tang and restore Sui. As a result, Yang Shenjin and his brothers Yang Shenyu () and Yang Shenming () were forced to commit suicide, and many of their friends and family members were exiled. Meanwhile, Li Linfu, having unsuccessfully supported Emperor Xuanzong's son Li Mao () the Prince of Shou to be crown prince (with Emperor Xuanzong selecting Li Heng instead), was trying to find ways to undermine Li Heng, and therefore engaged Yang Zhao, Luo Xishi (), and Ji Wen () to falsely accuse people with connections to Li Heng, hoping to find a way to implicate Li Heng in improprieties. Yang Zhao was therefore able to use this opportunity to destroy several hundreds of households, although, with the eunuch Gao Lishi and Emperor Xuanzong's son-in-law Zhang Ji () protecting him, Li Heng was not implicated.