Qian Weichang's famous sayings:

1. To learn those key things, you must stride forward. If you look back after you have gone far, the original things will be gone.

2. If you think you don’t understand a lot of things, then you are very knowledgeable; if you think you know everything, you are probably uneducated. We need to cultivate this kind of people, people who are full of problems. This kind of people is what our country needs.

3. From philosophy to physics, from solid to fluid, alternating prosperity and adversity, suffering hardships, honors and disgrace, growing stronger with age, this is the perfect mechanics of his life! No fame, no profit, no regrets, no love, no profit, no regrets, no love, no righteousness, no motherland.

4. I have a lot of money, but why do I still work so hard? Because I love my country deeply!

5. A country’s strength is not reflected in its military, but in the happiness of its people.

6. I am a scientist, but I am also a democrat. The two are not contradictory.

7. A person must have a patriotic enthusiasm, but he must not be hot-headed and must remain rational.

8. I am a patriot. I love my country and I love China even more.

9. China has no national bad habits, but there are many bad habits.

10. My goal in life is to be loyal to the country and serve the people.

Qian Weichang’s contributions:

1. In the field of science, Qian Weichang mainly involves mechanics, physics, Chinese informatics and other disciplines. He established China's first elastic mechanics equation, laying the foundation for China's machinery manufacturing and aviation industry. Qian Weichang has also participated in scientific research in the fields of nuclear energy, meteorology, etc., such as presiding over and guiding the successful development of geothermal power generation and seawater desalination technology, bionic pesticides, blind abnormally curved fifth-generation fighter jets, etc.

2. In the field of education, Qian Weichang attaches great importance to the all-round development of students and puts forward educational theories such as teaching eight pieces and learning eight pieces. He served as president of Tsinghua University for a long time and made significant contributions to the development of education in China.

3. As a social activist, Qian Weichang has made unremitting efforts for the reunification and development of the motherland for a long time. He has participated in many international conferences and organizational activities and made important contributions to improving the international image and status of his motherland.

4. As a patriot, Qian Weichang's love for the motherland is deeply rooted in his heart. He always insisted on striving for the development and prosperity of the motherland and made indelible contributions to the progress and prosperity of the motherland.