He grew up in Beijing and entered the National Central University ( Nanking University ) in Chungking as a student of animal husbandry .
Ling was born December 26 , 1919 , in Nanking , China .
Ling grew up in Beijing and entered the National Central University ( Nanking University ) in Chungking as a student of animal husbandry .
Ling was born December 26 , 1919 , in Nanking , China .