Plot: The 21-episode TV series "Secret War" is a public security drama that reflects the fearless difficulties and selfless dedication of anti-drug police officers. It gathers many excellent actors such as Xi Meijuan, Wang Qingxiang, Jin Xin, Yao Kan, Tong Lei, and Li Zonghan. In the TV series "Secret War", Xi Meijuan, who is known for playing virtuous wives and good mothers, boldly challenges herself by playing two roles. She switches between Fan Aizhen, a "drug rehabilitation doctor" who has made remarkable achievements in the drug rehabilitation cause, and Mu Jichun, the "head of a drug trafficking group" who is sinister, ruthless, and cunning. These two characters are extremely different from each other.