《明史·列传·卷五十一》
王振知道无法使他屈服，便送给他文锦、羊肉和酒，求他写程子的《四箴》，希望他来答谢。
振知不可屈，乃贻之文锦羊酒，求书程子《四箴》，冀其来谢。
Wang Zhen knew that he could not make him yield, so he sent him brocade, mutton and wine, asking him to write Cheng Zi's "Four Warnings", hoping that he would come to thank him.