1. Teachers preach, teach and solve doubts also means: teachers are people who are used to teach truth, give it to their studies, and explain difficult problems. So: for. Tao: refers to the Confucian Way. Accepted: pass "teach", teach. Industry: generally refers to ancient classics, history, scholars' learning and ancient prose writing. Question: Difficult problems.
2. "Teachers, therefore, preach and learn to dispel doubts" is an argumentative paper "Teacher Talk" written by Han Yu, a writer of the Tang Dynasty.