In short, where is the headquarters in Xia Dong?

Shanghai. In a word, Xia Dong is produced by Shanghai Shangshi Film Co., Ltd., Shanghai Yingli Culture Media Co., Ltd., Tencent Film Culture Communication Co., Ltd., Maisong Film Investment Co., Ltd. and Horgos Yuekai Film Media Co., Ltd., with its headquarters in Shanghai. Starting from the headquarters, the man and two brothers set up three investigation teams. Based on Xia Dong's five-member team, the total number is no more than 30, and they plan revenge.