Science is not for personal honor, not for personal gain, but for human happiness. Throughout the ages, what can achieve a career and make a difference to mankind is the result of down-to-earth climbing. It is precisely because the motherland is poor and backward that scientists need to work hard to change her face. Do everything in a down-to-earth manner, don't do nothing, don't talk empty talk, and be down-to-earth. If you study with this attitude, the truth will be clear, and if you do things with this attitude, you will succeed. Knowledge is mainly "mastering" actively, not "imparting". Although science has no national boundaries, scientists have their motherland. The ideal book is the key to wisdom. Bright China, let my life burn for you. Once considered as a difficult and critical moment, it has become the happiest, most energetic and most comfortable golden age for the people of China. As a patriotic intellectual, I know very well at this moment what this will mean to China's nuclear science and even China's history. There are many difficulties ahead. As long as one of them cannot be overcome, thousands of troops will run aground. Science has gone through a very tortuous and difficult road. Various scientific discoveries often have one thing in common, that is, diligence and innovative spirit. If you like Qian Sanqiang's famous words, remember to share them with more friends!