《后汉书·列传·袁张韩周列传》
张酉甫用《尚书》教授门徒，数次在御前讲学。因论难合乎君主之意，除为郎，赐车马衣裳，便叫他入宫授皇太子。
以《尚书》教授，数讲于御前，以论难当意，除为郎，赐车马衣裳，遂令入授皇太子。
Zhang Yufu used the "Shangshu" to teach his disciples, and he lectured in front of the emperor several times. Because he had a good theory, he was removed as Lang, and he was given a car, horse and clothing, and he was ordered to enter the palace to teach the crown prince.