There may or may not be 480 sets, because it is impossible to count. Unless there were instructions for torture at that time, what was the first method?

The main job of modern intelligence agencies is to analyze intelligence, not torture. In ancient China, due to the emphasis on confession, there were many methods of torture. Zhazidong is a situation organization established by China and the United States during the Anti-Japanese War, and the intelligence analysis of code decoding is their specialty.