When Niu Jian Fang and Jiao Na got married they knew China's rules - one couple, one child. Many Chinese take fertility drugs in the hope of a multiple pregnancy A woman can only give birth once. So, four years ago, Jiao Na got pregnant and gave birth to a son, Bei Bei. And then a few minutes later she had a daughter, Jin Jin, then another son Huan Huan, a second daughter, Ying Ying, and finally another girl, Ni Ni. She and her husband beat China's one-child policy by having quintuplets. But life has not been easy for...