Qian Xuesen, Qian Weichang and Qian Sanqiang are known as the "San Qian" of China's scientific and technological circles, and they have made remarkable achievements in their respective fields. He was one of the three great scientists of his time, and was called Qian because they were all surnamed Qian.

During the modern China period, there were many talented Qian family members, the most famous of whom were "San Qian"-Qian Xuesen, Qian Sanqiang and Qian Weichang. Qian Xuesen is the father of Chinese missiles and the founder of China's space industry. Qian Sanqiang is the father of atomic energy science in China and the hero of "two bombs and one satellite". Qian Weichang is one of the founders of modern mechanics and applied mathematics in China.

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In addition to "",Qian's modern celebrities also produced a large number of scientific and technological talents. According to statistics, there are 19 academicians surnamed Qian, ranking 20th in the list of academicians' surnames in China. Among Qian's descendants is a Nobel Prize winner in chemistry, who is the nephew of Qian Xuesen, the father of Chinese missiles. Because Qian Yongjian is Chinese-American, he is not famous. Qian Yongjian is a member of the National Academy of Sciences, the National College of Medicine and the American Academy of Arts.