"Science has no borders, scientists have the motherland" is a famous saying of French scientist Pasteur, which is well interpreted by Qian Sanqiang and his son.
On the eve of the founding of New China, Mr. and Mrs. Qian Sanqiang decided to return to their motherland and devote their life to what they had learned. Before leaving, someone asked Qian Sanqiang, why did you choose to go back to poor China instead of a good scientific research environment and excellent living conditions? Qian Sanqiang replied: "Although science has no national boundaries, scientists have their motherland. It is precisely because the motherland is poor and backward that scientists need to work hard to change her face. "