Director Han-minKim is best at horror themes. This film is a transformation of his work, hoping to broaden his subject area, especially to challenge his own ability to control magnificent themes. In order to show the charm of archery more realistically, martial arts instructor Zhang Chunxie not only looked through a large number of related documents, but also received help and guidance from domestic archery professionals, especially the principles and techniques of classical archery. The actors have also received long-term archery training. Although many extremely professional movements require technical synthesis, the basic essentials have been fully mastered. In addition to archery, riding is also a must-have skill for actors. Since the Jurchen nation is a horse race, immediate confrontation has also become the most important part of this war. In riding training, the actors spend almost all day with horses. Because it is a costume film, the costume styling crew also invited the art director Quan Youjin who had participated in the creation of "North Korean Detective", "Good Guy, Bad Guy, Strange Guy" and "Qingyan" and other films, and created a large number of characters for the film. The war uniforms and Chinese clothes, especially the clothing of the Manchu and Qing army, are made with reference to a lot of historical materials, and they are tailored with blue silk and satin with gold silk. The film also hired experts to instruct the actors to speak Manchurian dialect, which is spoken by only about 700 people in the world.