Tiancheng Town, Dazhu County, Dazhou City, Sichuan Province. Zhang Wei, 198 1, was born in Tiancheng Town, Dazhu County, Dazhou City, Sichuan Province in July. I studied in village primary school for the first four years, and transferred to Tiancheng Township Primary School in Dazhu County in the fifth grade. Chinese-American, mathematician, academician of American Academy of Arts, professor of mathematics department of Massachusetts Institute of Technology.