In fall 945, Jian Prefecture fell to the sieging Southern Tang troops commanded by the general Cha Wenhui (). Wang Yanzheng surrendered, ending Min, and subsequently, all of the former Min realm (at least nominally) submitted to Southern Tang. Subsequently, a member of the Min imperial clan, Wang Jixun (), who was then the prefect of Quan, wrote to Li Renda, offering to establish friendly relations, but Li Renda took offense, as traditionally, Quan was part of and subordinate to the military governor of Weiwu; he thus sent his younger brother Li Hongtong () to attack Quan in late-spring 946. Wang Jixun's officer
Liu Congxiao used this as an opportunity to depose Wang and take over Quan, and then repelled Li Hongtong's attack. Previously, when Cha captured Jian, there were suggestions made to the Southern Tang court that the army advance and take over Fu as well. Li Jing declined ordering so, and his chief of staff
Chen Jue offered to go on a diplomatic mission to Fu, to try to persuade Li Hongyi to give up his
de facto self-governing status and report to the Southern Tang capital
Jinling. To try to show good grace to Li Hongyi, before Chen's mission, Li Jing bestowed lady titles on Li Hongyi's mother and wife and granted offices to his four younger brothers. Further, Chen arrived at Fu with gold and silk to be awarded to Li Hongyi. However, Li Hongyi, knowing what Chen was there to do, treated Chen with coldness and disrespect. Fearful, Chen left Fu without even bringing up the matter of summoning him to Jinling. As Chen was on the way back to Jinling, when he reached Jian Prefecture (劍州, in modern Nanping, note different location than the former Min capital), he issued edicts in Li Jing's name (without Li Jing's approval) ordering Li Hongyi to report to Jinling. The false edict also named Chen the acting overseer at Fu and launched troops from Ting (汀州, in modern
Longyan,
Fujian), Jian (the former Min capital), Fǔ (撫州, in modern
Fuzhou,
Jiangxi, note different location), and Xin (信州, in modern
Shangrao,
Jiangxi) Prefectures, under the command of the Jian army monitor
Feng Yanlu, to head toward Fu to pressure Li Hongyi. When Feng wrote Li Hongyi to try to persuade him to give up his control of Fu, however, Li Hongyi responded and challenged him to a battle. While Feng initially defeated Li Hongyi's general Yang Chongbao (), they were defeated at Fu when engaging Li Hongyi himself. Li Jing, initially angry that Chen had forged his edict, decided to try to reinforce his and Feng's army to try to defeat Li Hongyi, and therefore put the senior general Wang Chongwen () in command of an army to further siege Fu. The outer city quickly fell, but Li Hongyi was able to hold the defense of the inner city, and the Southern Tang attack bogged down. == Break with Southern Tang and allegiance to Wuyue ==