《明史·志·卷四十五》
到了成化十三年，御史胡璘说： 天下的教官大多是岁贡，言语行动文章不值得为人师表，请求多录取举人选择任用，而罢除贡生，不再选用。 
至成化十三年，御史胡璘言： 天下教官率多岁贡，言行文章不足为人师范，请多取举人选用，而罢贡生勿选。 
In the 13th year of Chenghua, Imperial Censor Hu Lin said: Most of the teachers in the world are "Sui Gong" (tribute students), and their speech, actions, and articles are not worthy of being role models. He asked to recruit more "Ju Ren" for selection and appointment, and to dismiss the "Gong Sheng" (tribute students) and stop selecting them.