Western Wei
In fall 554, when Western Wei launched an attack on Jiangling, Emperor Yuan summoned Wang from Jiankang. Wang readied his troops to come to Jiangling's aid, but before Wang could do so, Jiangling fell. Western Wei forces took Emperor Yuan captive and, around new year 555, put him to death, creating Xiao Cha, who had become a Western Wei vassal, as emperor instead. Xiao Cha's state is known as the Western Wei in history.