Diligence means to cherish time and study hard. "Good thinking" means to dare to question, be good at thinking, be brave in asking questions, and actively explore and solve problems. "Discrimination" means distinguishing right from wrong, knowing things, grasping the laws and mysteries of things, and distinguishing truth, goodness, beauty from falsehood, evil and ugliness. "Persistence" means serious practice. In terms of conduct, we must be consistent in words and deeds and consistent in appearance; We should apply what we have learned, pay attention to practice, don't talk empty words, and integrate knowledge with practice.