[1] Li Deyu, in particular, was particularly powerful during the reign of Emperor Wuzong of Tang, controlling the affairs of state.
[1] After the fall of the Tang dynasty, Li Yinheng served under Zhu Wen, the founding emperor of the succeeding Later Liang, as You Bujue (右補闕), a low-level advisory official at the legislative bureau of government (中書省, Zhongshu Sheng).
[3] In 908, Emperor Taizu sent him as an emissary (assisting Zhao Guangyi) in officially bestowing the office of military governor (Jiedushi) of Qinghai (清海, headquartered in modern Guangzhou, Guangdong) and Jinghai (靜海, headquartered in modern Hanoi, Vietnam) Circuits on the warlord Liu Yin, who controlled Qinghai and who was nominally Emperor Taizu's vassal.
When Zhao and Li arrived at Qinghai, Liu kept both of them on his staff and did not return them to Later Liang proper.
He commissioned Li Yinheng, along with Zhao Guangyi and another official, Yang Dongqian, as chancellors with the designation Tong Zhongshu Menxia Pingzhangshi (同中書門下平章事), with Li receiving the secondary office of deputy minister of rites (禮部侍郎, Libu Shilang).