1, Wang Yiren, a native of Jiayu, Hubei Province, originally from Xiuning, Anhui Province, is a physiologist, histochemist, cell biologist and academician of China Academy of Sciences. He was a biology professor at Beijing Normal University before his death. 1September 1993 18 died in Beijing at the age of 8 1.

2. Qiu, a native of Wuxi, Jiangsu Province, was a plant pathologist, plant virologist, mycologist, agricultural educator, academician of China Academy of Sciences and professor of China Agricultural University. On September 8, 2000, 18 died in Beijing at the age of 88.

3.LeonhardEuler, Swiss mathematician and natural scientist. 1707 was born in Basel, Switzerland on April 5, and 1783 died in St. Petersburg, Russia on September 8.