The relationship between the son-in-law Zhou Tong and Ning Yi, the killer, and the murdered. According to relevant information, in "The Son-in-law", Zhou Tong is recognized as the number one master among the sons-in-law. After Ning Yi defeated Liangshan, Zhou Tong responded to the request of the Taiwei Mansion to kill Ning Yi. The TV series "The Son-in-law" is adapted from the novel "The Son-in-law" of the same name by Angry Banana, a writer on the Qidian Chinese website of China Literature Group. It is produced by Xinli TV Culture Investment Co., Ltd., Tencent Pictures Culture Communication Co., Ltd., and Tianjin Yuewen Film and Television Culture Media Co., Ltd. , jointly produced by Beijing iQiyi Technology Co., Ltd.