Report 1. The key to opening the door to science is undoubtedly a question mark.——Li Siguang

2. Smart and eager to learn, and not ashamed to ask questions.——Confucius

3 .The famous scientist Li Siguang has a famous saying: "You cannot see the truth without doubting"

4. Mencius said: "It is better to have no books than to believe in books."

5. Zhu Xi of the Song Dynasty said : "Those who have no doubts in reading must be doubtful in teaching, and those who have doubts must have no doubts. Only here can they make progress." Chen Xianzhang, a man of the Ming Dynasty, said: "The elders said that learning is valuable when you have doubts. Small doubts lead to small progress, and big doubts lead to great progress. Doubt This is the opportunity for awakening. Once you awaken, you will make progress."