Write an English essay introducing China scientist Qian Xuesen.

The father of China's "Qian Xuesen" missile and "the father of space flight", 1938, graduated from Shanghai Jiaotong University. People think he is unique and extraordinary, but in my opinion, he is just an ordinary person, but his extraordinary side is revealed in the ordinary.

When Qian Xuesen left his motherland to study in the United States on 1935, he said: "My study in the United States is temporary, and I will return to my motherland after I learn the skills!"

Twenty years later, he returned to depend on himself and kept his word! He helped China successfully develop missiles, satellites, atomic bombs, etc., and made outstanding contributions to the development of China's space flight. This is his ordinary and extraordinary!

Translation:

China, the father of "Qian Xuesen" missile and "the father of aerospace", graduated from Shanghai Jiaotong University 1938. People think he is unique and extraordinary, but in my opinion, he is just an ordinary person, just revealing his extraordinary side in the ordinary.

Qian Xuesen said when he left his motherland to study in the United States on 1935: "My study in the United States is temporary, and the skills I have learned will not play a role until I return home!" Twenty years later, he came back and did as he said! He helped China successfully develop missiles and satellites and made outstanding contributions to China's atomic bomb and space development. This is his ordinary and extraordinary!