Watch the full series of "The Enemy is in Action" online, watch "The Enemy is in Action" online, episode-by-episode plot introduction of "The Enemy is in Action".

The story takes place in 1951, not long after the founding of new China. Numerous terrifying incidents occurred in a small city in southwest China. A key figure died and became a red spot corpse. Public security officer Lu Fei began a difficult investigation... Apparently, this kind of anti-espionage drama is packaged with a sinister and terrifying atmosphere. The main actors Liu Xiaofeng and Wang Wu mentioned that they were scared several times while filming, such as running wildly in the graveyard on a moonless windy night, or hearing intermittent dripping water sounds from an old house at midnight... These often made people feel spine-chilling. However, Liu Xiaofeng stated that being spooky and mysterious was only a small aspect of the entire drama. It was more like an intelligence game. "For anti-espionage dramas to be appealing, it's not just about us acting while the audience watches. Instead, as we act, the audience guesses along with us. The character I play is more like a detective akin to Wei Si Li (Nathan). He keeps analyzing problems and reasoning cases, unraveling them bit by bit, leading the audience to solve the case. This play is actually a multiple-choice question. Everyone around seems to be the enemy, but having a corpse doesn't necessarily mean that person is dead, and doing bad things doesn't necessarily make one a bad person."

Because of his handsome appearance, investors rarely cast Liu Xiaofeng as a villain, which became a knot in his heart. Liu Xiaofeng inadvertently mentioned a currently popular drama called "After Landing, Please Turn On Your Mobile Phone," considering it an excellent work. But he also boldly declared: "Sun Honglei looks like a bad guy at first glance, so he's trying hard to play a good guy. I look like a good guy at first glance, so I am more suitable for the role of Shen Kang than Sun Honglei."