How powerful was the strange sword array in the Tang Dynasty, and why did it finally disappear?

The strange knife is a weapon against infantry and cavalry, and its power can achieve the purpose of crushing both men and women. Ink knife is a kind of long knife in the Tang Dynasty in China, and its origin can be traced back to the war horse knife in the Western Han Dynasty. Because both are double-edged, very sharp, and they are specially used to deal with cavalry. No cultural relics of the Tang Dynasty were unearthed because funerals were forbidden and private events were not allowed in the Tang Dynasty.

In the Book of the New Tang Dynasty, there is a fragment describing the power of the strange Dao in the Tang Dynasty. In the Anshi Rebellion, Zhang Hang held a strange knife from the Tang Dynasty and killed several people with one knife. The strange knife is about three meters long and weighs about 20 Jin. It has two edges. This style and weight have exceeded most people's understanding of holding sword weapons. Compared with Tang Dao, the weapons of other dynasties are particularly inferior.

The sabre in the Song Dynasty was only three feet long, but even this sabre became a sharp weapon on the battlefield in the Song Dynasty. The length of the sword in Song Dynasty was less than half that in Tang Dynasty. Japanese Dao is also very famous, but its length is only about 1.5 meters, its weight is only five or six pounds, and the longest is no more than two meters, and this kind of Dao is used for etiquette. The common length of European knives is about 1 m2.

The strange knives in the Tang Dynasty should be used by infantry, and a large number of troops were equipped at that time. If only one or two people use it, history books can't spend so many words to describe it. However, due to the complicated manufacturing process and high cost of knives in Tang Dynasty, and the strict management of knives in Tang Dynasty. Even emperors and generals can't take them into the grave.

In the late Tang Dynasty and the Five Dynasties, due to years of war, ordnance consumption was also very fast, and the excellent weapon ink knife could not afford to play at all, so it withdrew from the historical stage.