2. In China, spears are the main weapons, supplemented by machetes. In Japan, pike and mountain city are the main weapons. In the west, weapons are mainly short swords, javelins and wide swords. Sabre is the most important weapon in Arabia.

4. The Japanese blade is slightly bent backward, and the blade is extremely sharp by wrapping, clamping and burning. In order to avoid being cut off, the body of western swords is usually long and wide, but the quality of the blade is not as good as that of the East and Arabia. China's sword is usually slender. The main attack mode is not chopping, but chopping. The knife is very wide. Before the Song Dynasty, China's sword quality was the world's leading, but in the later period, it was not as good as Arabia and Japan, ranking third in the world. The famous Arab "Damascus Knife" ranks first in the world, and its beautiful cloud-like mottling and unimaginable sharpness have become the dream pursuit of world knife fans (including myself).