Why did the ancient weapon "Zha", which once shone brilliantly on the battlefield, be eliminated in the torrent of history?

As a kind of long-edged spear weapon in ancient times, Zha was very popular for a period of time in ancient times. However, due to its large size and weight, it usually takes several people to wave it, which is very inconvenient to use on the battlefield. Tu Tu increased the casualties of the troops, so he gradually withdrew from the historical stage and was replaced by other more practical weapons.

The development of social civilization is always accompanied by war and killing. In the primitive society of China, the struggle between various departments and groups basically used stone and bone weapons, and they polished all kinds of weapons by imitating the claws and sharp horns of animals. With the development of the times, it gradually developed into a slave society, and people gradually mastered the smelting and casting technology of bronze, so weapons were further developed, not only bronze spears and swords for attacking, but also bronze armor for protecting themselves.

During the Spring and Autumn Period and the Warring States Period, because of the development of quenching technology, iron gradually replaced bronze. By the Eastern Han, Tang and Song Dynasties, China's iron weapons had reached its peak, and the infantry at that time had armor and knives and shields with both offensive and defensive functions. The cavalry also has a double-edged spear, which can easily cut the enemy's armor. During the Three Kingdoms period, Zhuge Liang invented Zhuge Liang's crossbow, which enhanced the flexibility and combat effectiveness of crossbowmen. In the Song Dynasty, the invention of gunpowder gradually transformed human society from the era of cold weapons to the era of hot weapons.

Historical civilization always develops in a more advanced and concise direction, and there is a development trend of survival of the fittest. Although Cheng was brave in killing the enemy, he was gradually eliminated in the long river of history because of the inconvenience in use. Of course, the development of the country cannot be limited to the existing ones. It is necessary to develop more powerful weapons to kill the enemy, so as not to suffer the painful lesson of western firearms attacking China in the Opium War.