李林甫
After Li Linfu's death, Chen continued to serve as chancellor, along with Yang, but actual power was wielded by Yang. It was said that all important matters were decided at Yang's mansion, not at the office of the chancellors. Meanwhile, when Yang was able to successfully posthumously implicate Li Linfu in Li Xianzhong's rebellion, causing Li Linfu to be posthumously dishonored and his family to be exiled, Yang and Chen were created greater ducal titles—in Chen's case, the Duke of Xu—to award them for "discovering" Li Linfu's plot.