 By 440, however, Liu Yikang, a major part of the success of Emperor Wen's government due to his diligence and abilities, had become so flattered by Liu Zhan that he appeared to blur the distinction between himself, as a subject, and the emperor.When Emperor Wen grew ill again, Liu Zhan and Liu Yikang's associates Liu Bin (), Wang Lü (), Liu Jingwen (), and Kong Yinxiu () secretly plotted to have Liu Yikang succeed Emperor Wen, against Emperor Wen's wishes to have Crown Prince Shao be emperor and Liu Yikang serve as regent.When Emperor Wen grew better, he began to suspect Liu Yikang of wanting to usurp the throne.