The TV series - Imperative - is adapted from Zhang Ping's novel - House of Flying Daggers.

Introduction to the novel

Investigators from Gucheng Prison discovered a major criminal suspect from an inmate. After numerous dangerous detections and counter-detections, they finally uncovered a major case involving multiple social strata inside and outside the prison, leaving a group of social scum and worms who had infiltrated the state's dictatorship organs to...Revealed in broad daylight.In order to defeat the most vicious criminal gangs, the public security and judicial warriors hated evil as much as their enemies and sacrificed their lives, so that justice finally defeated evil.

The novel uses the detection of a case throughout the book, with twists and turns, dangers and thrilling plots.In order to write this novel, the author followed the SWAT team and traveled hundreds of kilometers to rescue hostages in remote towns and villages, experiencing the test of life and death and the baptism of the soul.