"My father taught me to know how to give up in life," said Qian Yonggang, the curator of Qian Xuesen Library of Shanghai Jiaotong University and the son of Qian Xuesen, in an exclusive interview with China News Service reporters at Qian Xuesen Library of Shanghai Jiaotong University on the 3rd. On June 3, Qian Yonggang, the curator of Qian Xuesen Library of Shanghai Jiaotong University and the son of Qian Xuesen, received an exclusive interview from China News Service. According to Fan Yubin, a journalist from China News Agency, "My father had the greatest impact on me when he learned what 'giving up' is." Qian Yonggang admitted that when he was young, he wanted anything good and longed for one day to achieve everything he wanted and get everything he wanted. But after working, I found that this is a beautiful ideal. What you really want is not perfect enough without learning to give up. This truth was comprehended by Qian Yonggang from his father's life experience. My father has such great abilities, but he clearly knows that his abilities are limited. To truly achieve them, he must learn to give up, "Qian Yonggang said. As he said, Qian Xuesen's "giving and getting" has been clearly reflected in his life path - Qian Xuesen studied and worked in the United States in his early years. At the beginning of the founding of New China, he broke through many obstacles, resolutely returned to China to participate in construction, and eventually became a well-known "national outstanding tribute scientist" at home and abroad and the founder of China's aerospace industry. "Today, most people will not doubt that Qian Xuesen's life is a successful life." Qian Yonggang said that Qian Xuesen had made five life choices to choose a life for national rejuvenation: learn railway engineering and build railways for China; Change to Aviation Engineering; Shift from being an aviation engineer to researching aviation theory; Shift from academic theoretical research to large-scale scientific research project construction; Finally, we will return to academic and theoretical research. Exploring Qian Xuesen's success from a broader perspective, Qian Yonggang believes that the spiritual realm of a Chinese intellectual is the reason for Qian Xuesen's success. "He always cares about the rejuvenation of the nation, always pursues scientific truth, and always devotes himself to the modernization of the motherland." "Qian Xuesen's greatness is not only his achievements in the aerospace field, but what we should really learn is that he still insists on learning and studying every day after retirement." Qian Yonggang said that from the age of 71 to 85, Qian Xuesen has made unremitting exploration in many fields, and he put forward the concept of open complex giant system, We have created a theory and practical form of "comprehensive integration method from qualitative to quantitative", devoted ourselves to studying system engineering theory, and further developed this theory from engineering system engineering to social system engineering, making it an organizational management method for achieving long-term and overall optimal benefits in various fields of society. Qian Yonggang revealed that, Qian Xuesen once said to his grandson Qian Lei, "Half a century ago, the country asked me to develop rockets and missiles, and then artificial earth satellites. I used mature theories and technologies, and there was nothing new, just to develop them as soon as possible according to the requirements of the country, which is nothing. Remember, if this thing is also called great, then the grandfather of the 21st century will be even greater." At the entrance of the second exhibition hall of Qian Xuesen Library of Shanghai Jiaotong University, there is a time sequence showing Qian Xuesen's lifelong involvement in more than 20 disciplines