语出《吕氏春秋·察传》:“晋师三豕涉河。”故事链接:子夏是孔子的学生,擅长文学。孔子死后,子夏定居魏国讲学。魏文侯尊他为师。一年,子夏到晋国去,路过卫国。在卫国,子夏见一位学者正阅读史书。学者听说子夏来了,知道他是孔子的高足, The words “Lu’s ​​Spring and Autumn Annals”: ​​“Jinshi Sanwa River.” Story Link: Zi Xia is a student of Confucius and he is good at literature. After Confucius died, Zi Xia settled in Wei to give lectures. Wei Wen Hou respected him as a teacher. One year, Zi Xia went to the Jin country and passed by the Wei State. In Weiguo, Zi Xiajian sees a scholar reading a history book. Scholars heard that Xia Xia came and knew that he was a tall man of Confucius.