 He was unable to prevail over Fu in the debate, and Emperor Gaozu issued an edict severely limiting the number of Buddhist temples, although the edict did not appear to be seriously carried out.Later in 626, Li Shimin, then in an intense rivalry with Li Jiancheng, who had been made crown prince as the oldest son, feared that Li Jiancheng was about to kill him.He submitted a secret petition to Emperor Gaozu accusing Li Jiancheng and another brother, Li Yuanji the Prince of Qi, who supported Li Jiancheng, of committing adultery with Emperor Gaozu's concubines and plotting to kill him.