The famous Chinese mathematician  Hua Luogeng was born in Jintan County, Jiangsu province in 1910. When he was young, life was very difficult for his family. Still, the boy took great interest in math. In the summer of 1931, he was fortunate  enough to become an assistant in the Math Department  of Qinghua University, where he spent every moment he could find working and studying, and he finished his compulsory  math course all by himself in only 13 months! Between the years of 1936 and 1938, he was further studying in Cambridge University in the U.K. In 1950, together with his family, he returned to China from the USA. He said, "I'm Chinese, and I'll do my best for my motherland." So he did. He devoted  all his life to the math study and won the great fame  for our country. He died for heart trouble in 1985 while lecturing in Japan. People will always remember him as a great scientist. From the story we can guess that Hua Luogeng was born in   _  .
a rich family a poor family a mathematician family a fortunate family