He is a big boy. According to the mission of TV series, He Dalai is the deputy secretary of the Political and Legal Committee of Baishan District, and Yu Hairong is the secretary of the Political and Legal Committee of Qingshui City under Baishan District, so He Dalai's position is greater than Yu Hairong's. Mission is a criminal investigation drama jointly produced by China Film Group Corporation and Beijing Bai Na Qiancheng Film and Television Co., Ltd., directed by He Qun and Zhao Jin and starring Zhang Jiayi, Zhao Xiaorui, Zongdi Xiu, Li Jianyi, Xie Gang and Min Xu.