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In any case, though, over the years, Song had often praised the abilities of Li Jing's younger brother Li Jingda, whom Li Bian himself considered resolute and magnanimous and therefore considered making his heir. While it did not actually occur, as Li Jing was older, Li Jing was resentful to Song for making the suggestion. Once, however, when Li Bian visited Li Jing's palace, he happened to see Li Jing playing instruments—which Li Bian considered frivolous, and therefore rebuked Li Jing for several straight days. Li Bian's favorite concubine Consort Zhong, who had given birth to Li Bian's youngest son Li Jingti (), took this opportunity to try to persuade Li Bian to divert succession from Li Jing to Li Jingti—which, however, angered Li Bian, who stated, "When a son has faults, the father rebukes him. This is normal. How can a woman interfere with important matters of state?" He sent her away and gave her in marriage to someone else. Meanwhile, Li Jing's staff members Chen Jue and Feng Yanji were in alliance with Song and finding ways to expel people who were not cooperating with them. Both Chang Mengxi () and Xiao Yan () submitted petitions to Li Bian accusing Chen of abuse of power, and it was said that while Li Bian understood some of the accusations to be true, he did not get a chance to act on them, before he fell deathly ill in spring 943 from poisoning due to pills given him by alchemists. On March 30, he summoned Li Jing to his deathbed, and, after entrusting the state to him, died. Li Jing did not immediately announce his death, but instead issued an edict in his name naming Li Jing regent and announcing a general pardon. Meanwhile, the official Sun Sheng, trying to stop the influence by Chen and the others on the incoming emperor, considered trying to announce that Li Bian's will named Empress Song regent for Li Jing, but when the official Li Yiye () pointed out that Li Bian often spoke against women's influence on governments and stated that he would publicly tear up the will if it were announced, Sun relented. Shortly after, Li Jing announced Li Bian's death, and then took the throne.