[1] After Zhu Quanzhong seized the Tang throne in 907, establishing Later Liang (as its Emperor Taizu),[2] Dai Siyuan, who was serving as an imperial guard general, was made the prefect of Jin Prefecture (晉州, in modern Linfen, Shanxi).
[3] Zhu Yougui made Dai Siyuan the military prefect (團練使, Tuanlianshi) of Ming Prefecture (洺州, in modern Handan, Hebei).
[5] At a later point, Dai was made the military governor of Tianping Circuit (天平, headquartered in modern Tai'an, Shandong).
[6] However, during his campaigns, Dai left the defense of Tianping's capital Yun Prefecture (鄆州) in the hands of his officers Lu Shunmi (盧順密), Liu Suiyan (劉遂嚴), and Yan Yong (燕顒).
The Later Tang emperor commissioned his adoptive brother Li Siyuan to launch a surprise attack on Yun, capturing it.
[1] After Meng Zhixiang the military governor of Xichuan Circuit (西川, headquartered in modern Chengdu, Sichuan) and Dong Zhang the military governor of Dongchuan Circuit (東川, headquartered in modern Mianyang, Sichuan) jointly rebelled against Emperor Mingzong in 930,[9] Dai, as he was a friend of Dong's, wanted to avoid suspicion, so he asked to give up his command.