Open the medicine cabinet and take out Chengliang's switchblade.,According to Qin Xianfen, her biological child is Qin Xiyu, Xu Yuyan's half-sister. She was sickly since childhood and relied on medicine to barely survive.,I heard a rumor, that the umbilical cord of a close relative can be used as medicine to cure illness. In order to save my child and to take Xu Yuyan's share, eight months ago, I conspired with Pei Yichang and put something in Xu Yuyan's drink!。