Embodied in weapons, it is the Japanese Tatsu Yamashiro, which has absorbed the strengths of many families. The famous swords in the Complete Works of Ancient Knives written by Yang Muhongbang are all in China color, such as dragons, Tang swords and statues of gods, which are all influenced by China, while Sanskrit and Buddha statues are influenced by Indian. After the Tang Dynasty, Japanese knives continued to learn from other countries. When the western industrial civilization gradually prospered, Japan quickly absorbed the advanced parts.
Among the cultural relics unearthed in ancient tombs, iron swords have begun to be included. At that time, Japanese Dao didn't have a straight arc as seen in various games now. On the contrary, the blade is straight, which is more like imitating China's sword than a knife. The Japanese's absorption of Tang Wenhua can be said to be like a gourd painting gourd ladle, and China's sword culture reached its peak in the Tang Dynasty. By the seventh century, almost all Japanese knives were straight, and this kind of knife is now called an ancient knife.
After the Heian period, due to the increase of immediate combat, it was inconvenient to use a straight knife in this case, so a curved blade too knife appeared. The signature weapon of Japanese samurai was born. Compared with other swords, Taidao is characterized by its sharpness. It is true that when Toyotomi Hideyoshi conquered Korea, the knives of Korean warrior and sergeant China were cut and folded by the Japanese. The Ming Dynasty also mentioned that the swords of Qi Jiguang soldiers were often broken by Japanese knives. This is because of its high carbon content and extremely high hardness. I often use white silk to clean the knife when I see something wrong with the samurai. This is because it has a high carbon content, and it will turn black if it is not rubbed. The manufacturing process of Taidao is extremely complicated. Just the first step to make a blade, it is necessary to heat the steel to latosolic red and hammer it for as many as twenty or thirty times, and hammer it for hundreds of times each time. It is necessary to separate out all impurities. Quenching is a process that determines the fate of the sword, and Taidao is unique in quenching. It absorbs all kinds of advanced experiences from the East and the West. Before heating, the toughness of the blade can be improved. When the blade burns to the right (what is the right? See the experience of forging knife), and then pull the knife out of the furnace, the knife worker shouted into the water, the blade was completely submerged in the water, the explosion was loud, the white fog transpiration, and the knife was quenched in the middle of the night, which was very mysterious. Three key points of quenching: time, water temperature and water composition. These are all secrets passed down from mouth to mouth, and outsiders don't know them. It is said that the liquid used in the quenching of third-rate knives is not only water, but also animal blood, which is very similar to the double-liquid quenching in modern quenching technology. After the sword is quenched, the blade is opened by the cutter, and the thickness of the blade is related to the user. A thin blade is good for cutting the enemy's body, while a thick blade is easy to cut the armor, but the damage to the enemy is reduced. In this way, Kibagami Genjuro's knife edge in the game of "introspection" must be very thin.
The inch method of Japanese knife refers to the length of the knife. The length of the knife mentioned here is only to calculate the length of the blade, not including the handle (Japanese knives are mainly held in both hands for easy chopping, and the handle is particularly long). Generally speaking, a knife with a blade length less than 30CM is a short knife, and the rib length is between 30 and 60cm. If it exceeds 60cm, it is a knife or a knife. So what's the difference in appearance between Taidao and ordinary Dao? Generally speaking, Taidao is a little bigger than ordinary Dao (Taidao is a' bigger Dao' after all), but this is just a general rule, and it is not excluded that there are ordinary Dao longer than Taidao. The difference between Taidao and ordinary Dao lies in the inscription: when holding a knife, the inscription should be outward. At this time, if the blade is upward, it is an ordinary knife; If the blade is facing down, it's too sharp. Speaking of inscriptions, this is also an interesting point of Taidao. Knife carving is also the last process of blade body making, and all knives are carved by knife workers. If the scar is a warrior's medal, then the inscription is a swordsman's honor. Famous Dao with XXX characters is often seen in various Japanese Warring States Games, that is, Taidao named after the inscription, such as the one-word inscription, and one from Samo Temple (inscription on the left). Inscriptions range from one word to more than ten words. The fonts have their own characteristics, and most of them are inscribed by calligraphy.
Finally, let's talk about two common ignorance mistakes about Taidao in China movies. First, when Japanese samurai cut abdomen, they didn't use too many knives, but a rib gap of about 30 cm (as mentioned above, the blade is more than 60 cm long, but the handle is often about 40 cm, so readers might as well try a wooden stick, which is very inconvenient), and the movement is not straight, and the so-called abdomen and cross abdomen are formed after puncture. The second is the placement of the knife on the tool holder. If it is placed on an ordinary tool rest (slightly placed), the blade should be facing down, the handle should be on the left and the tip should be on the right. In almost all domestic films I have seen, the handle is facing right.