2. Hua (1910.1.12-1985.6.12) is a native of Jintan District, Changzhou, Jiangsu Province. Mathematician, academician of China Academy of Sciences, foreign academician of American National Academy of Sciences, academician of Third World Academy of Sciences, academician of Bavarian Academy of Sciences of the Federal Republic of Germany. Member of the 1st-6th the NPC Standing Committee of China.
3, Zu Chongzhi (429-500), the word Wen Yuan. Jiankang (now Nanjing) was an outstanding mathematician and astronomer in the Southern and Northern Dynasties. Zu Chongzhi studied natural science all his life, mainly contributing to mathematics, astronomical calendar and mechanical manufacturing.