Dr. Yuan is the producer of Iron Knife. Judging from the relevant public information, smart and brave double agents are calm and know what they want. Bai Yuan, a bloody knife, is not a traitor. Bloody Slaughter is a spy war drama directed by Wang Guoliang, co-written by Song Lingyun, Zhang Duo and Lei Ming, and starring Shen Xiaohai, Renee and Liu Xiaofeng.