back in guangdong, zhou toasts his brother's birthday with friends. but thoughts of what has happened to his missing daughter continue to haunt him. zhou says he will keep looking for her, even if that trail leads him to find her happily adopted by another family, in another country. >> "i would be overjoyed if i could see her. but i would let her to decide whether to stay there or not, because, after all, she has a complete adoptive family there. as her father, i will be much satisfied very happy to see her live in peace. if she wants to stay with me, i would feed her even if i were to beg for food. if not, i would feel satisfied just see her. in fact, my biggest dream is to see her. only then, can my heart rest, or else otherwise, i will never feel at ease for the rest of my life." >> chinese families, like those in other asian nations, have historically shown a preference for sons, who could carry on the family name and support the parents in old age. and the country has long seen a gender gap of more males born than females. but since the advent o