It is said that the ancestor of Japanese Dao is tangdao, so why is Japanese Dao curved?

? I don't know if you have seen the mountain cities in Japan, but they are also different. The Japanese themselves call it Japanese Dao, which shows its unique art. Although Japanese Dao originated in tangdao, why is tangdao straight and Japanese Dao curved?

The role of machete is to drag and chop, which causes wounds from deep to shallow, which is very harmful. Suitable for weak people and Japanese at that time. The straight knife itself is a way of stabbing. Tangdao was not a knife at first, but was used instead of a sword. Later it was introduced to Japan, so will Japan? Japanese knife? Call it? Sword? ; In addition, Japanese knives are influenced by various factors before forming, and the blade of Japanese knives is slightly curved. The main reason is that the ancient Japanese sabers are basically samurai images, and these images are all fighting on horseback, so machetes are more suitable for them. However, Japanese swords changed again and became popular, while Japanese cavalry were actually rare. Many infantry began to use knives, and the use of knives needs to be adjusted, so the curvature of the blade began to decrease, so it seems that the curvature of Japanese knives is not big now.

The reason why Japanese knives are bent is to facilitate the use of knives, but the ability of piercing armor is insufficient. However, Japanese armor is mostly bamboo armor or wooden armor, and there is little demand for Japanese knife armor. On the battlefield in China, the soldiers are all wearing metal armor, and the defense is relatively strong. So the knife can be sharp and has the function of piercing armor, so tangdao straightened it and had the function of chopping. In the War of Resistance Against Japanese Aggression and Aid Korea during the Wanli Period of Ming Dynasty, elite Ming troops often defeated several times their own Japanese troops with a small number of troops in the process of close combat, and armor played a very key role.

Although Japanese Dao originated in tangdao, many changes have taken place with the changes of various situations. Depending on the battlefield environment and equipment, the tools used will be different.