The introduction and photos of the couple Deng Zhifang and his wife drew much attention. Deng Zhifang is the most low-key among the members of the Deng family. Liu Xiaoyuan, the wife of Deng Zhifang (in the photo), once attended the same university as him in the United States, obtained a doctorate in biophysics, and gave birth to a son during their study abroad. According to US law, any infant born in the United States is an American citizen. However...