As of 944, Liu Congxiao was serving as an army officer in the army of his home prefecture Quan Prefecture (泉州, in modern Quanzhou). By that time, the state that Quan had been ruled by,
Min, ruled by the imperial Wang family, had been broken apart by civil war and political strife—and now was under the reign of the usurper general
Zhu Wenjin (who had assassinated the emperor
Wang Xi (Emperor Jingzong), with Zhu's hold on the throne being Min contested by Wang Xi's brother
Wang Yanzheng, who had earlier declared himself emperor of a breakaway state of
Yin. After seizing the Min throne, Zhu sent the general Huang Shaopo () to Quan Prefecture to serve as its prefect. Liu, however, was discontented, and he stated to his colleagues Wang Zhongshun (), Dong Si'an (), and
Zhang Hansi: His colleagues agreed. In winter 944, they held a feast at Liu's house, and they gathered the soldiers below them whom they deemed reliable and strong. Liu spoke to them and stated (falsely, as it stood): The soldiers became roused by his words and followed him in attacking Huang. They climbed over the walls of the headquarters and killed Huang. Liu then took the prefectural government seal and presented it to Wang Jixun (), a nephew of Wang Yanzheng who resided at Quan, asking Wang Jixun to serve as acting prefect. Liu himself took the title of "Commander of the Army Against the Bandits" (). He boxed Huang's head and had the officer
Chen Hongjin deliver it to Wang Yanzheng's capital Jian Prefecture (建州, in modern
Nanping,
Fujian). Wang Yanzheng commissioned Wang Jixun to be the prefect of Quan, and Liu, Wang Zhongshun, Dong, and Chen to be commanders of the army. Hearing of Huang's death, Zhu sent the generals Lin Shouliang () and Li Ting'e () to attack Quan. Wang Yanzheng, hearing the news, sent the general Du Jin () to aid the Quan army. However, even before Du arrived, Liu led the Quan army and engaged Zhu's army, killing Lin in battle and capturing Li. Subsequently, Zhu was assassinated by his officer Li Renhan (), who surrendered Fu to Wang Yanzheng, who then took the title of Emperor of Min. However, a subsequent rebellion led by
Li Renda at Fu wrested that region away from Wang Yanzheng, and Wang Yanzheng's capital Jian Prefecture then came under attack by the Southern Tang general Cha Wenhui (). During the Jian siege, Wang Yanzheng ordered Quan to send a 5,000-men detachment to Jian to help defend the city; that detachment was commanded by Dong and Wang Zhongshun. == As Southern Tang subject ==