It's been rumored that when a seven-year-old gave birth to a tuan-tuan five years before, feng xin was bedridden. Why did the foster father suddenly wonder about this? That's why he's wondering, "could tuan tuan be a lang-s daughter?" The answer to this question is "all you need is a paternity test!" The foster father tells the doctor to come back and get a sample of tuan's blood to compare with the father's. The doctor says he'll be back by tomorrow morning to get the test results. The father gives the doctor the money to use to replace the blood sample from the father. The results are here, and the father is overjoyed. He's now a grandfather and a granddaughter, and he can't bear to let anyone else live with his granddaughter. He says he can live with the granddaughter now, and that he will search everywhere for her. He doesn't know how she just disappeared, but he suspects that she was taken away by her brother, who's angry with the feng family.