抗颜为师

Explanation: Anti-Yen: do not look at other people face, stern and unyielding attitude. As a teacher: serve as role models. Is not constrained by others, not about the trend, this strong-willed people who can serve as a role model. 　　Source: Tangliu Zong Yuan "A Weizhong Li on the Profession Book" independence regardless of Han Yu Fen Liu Su, Xiaomei made to close school after the call for "division, said," because the anti-Yen and for the division. "