In the ancient slave society and feudal society, there was a clear distinction between nobles and civilians, and powerful people were free to do evil at will. Some cruel rulers based their happiness on the sufferings of others and invented many inhuman punishments, such as burning in Shang Zhouwang, waist cutting and castration in ancient times, which were very cruel and bloody. During the War of Resistance against Japanese Aggression period, the cruelty and torture of Japanese aggression made people change color. The most famous ones were Tiger Bench and Pepper Water, but compared with these seven punishments in ancient times, they all looked pale in comparison.