Lee Ji-yoon is the producer of "TaeGukGi: Brotherhood Of War" and served as the Korean executive producer in the film. He is a key figure in promoting the cooperation between China and South Korea in this film. After Xiaogang Feng watched "TaeGukGi: Brotherhood Of War", he hoped to find the special effects production team of this film to join the film. In May 2006, Li Zhiyun and the boss of MK Company met with Xiaogang Feng and the person in charge of Huayi Company in Beijing, and decided on their cooperation intention.
For the difficulty of shooting, Li Zhiyun and his special effects team were well prepared. In his opinion, the most difficult of all film types is to make war films, because there will be many unpredictable factors. For the Korean staff, the biggest difficulty is the language barrier and the difference in work habits. Fortunately, as the shooting progressed, everyone slowly got in touch and solved this problem smoothly.
The scenes produced by South Korean blaster Jeong Dao-an are known for their almost cruel reality and powerful shocking effects. The film is the first time his team has come to China to participate in filming. They not only transplanted the special effects from "TaeGukGi: Brotherhood Of War" to "Assembly", but also found that there are many new things to try, upgrading and perfecting the previous technical effects. Because most of "Assembly" was shot in real scene, this also added difficulties to their work. Not only has the workload increased a lot, but the safety factor has also been reduced. The two main scenes of special effects in the film, one is the battle of fortifications, and the other is the battle of resistance. When shooting tough battles, the director's intention was to strive for reality, focusing on the explosion around the characters, so no fireworks were used during the shooting, but fragments were used. In the process of making special effects, the most important thing is safety
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