Excuse me, can bow cleaning reach 150 kg like Yingchang? When the heavy bow shoots the heavy arrow, what are the advantages and disadvantages between the green bow and the English dragon?

Yes, the ancient bow was 100 Jin, and the Qing bow was at least one stone. One stone is almost equal to 120 Jin, which is only the minimum standard. 150 kg is not a high standard at all. I have never heard of the saying that the bow is unstable. I started by clearing the bow, and I didn't feel unstable. Moreover, it is said that clearing the bow and shooting heavy arrows is because the weight of clearing the bow is relatively large, and the greater the pulling force, the heavier the arrows that need to be shot. Otherwise, if the energy is not enough for the arrow to be completely consumed, the extra energy will be borne by the bow itself, damaging the bow piece. The function of clearing the bow a little longer is that a little longer lever can make the bow more labor-saving, and naturally it can make more pounds. But the longer the bow, the greater the impact on the rebound speed. That's understandable. The heavier the bow, the higher the energy required for the bow to rebound. Therefore, the efficiency of clearing the bow with a long bow is lower than that with a small pointed bow, and the initial velocity of the arrow will be slower. However, the bow-clearing method of shooting heavier arrows by increasing tension solves the shortcoming of slightly slow arrow speed, and the armor-breaking effect of heavy arrows is far better than that of light arrows with high arrow speed. Xiao Ming is a little faster at archery, but most of them are nomads, and most of them have no armor, so we don't need to think too much about the effect of armor-piercing. The Manchu fought against the well-equipped Ming army, most of which were equipped with armor, so it was necessary to consider the problem of armor piercing.

As for recurve bow, recurve bow can store more energy, which makes the shot arrow have higher kinetic energy, so it is more powerful than the straight bow. With the same number of pounds, recurve bow's arrow speed is higher and the pulling feeling is better. Even with the same pulling force, recurve bow felt that straightening the bow was not so hard. Under the same tension, it takes more force to straighten the bow. The advantage of straight bow is that it is simple to make and it is easier to make a big tension bow. Skilled craftsmen cut roots in less than an hour, it takes two years in the north and three years in the south to make a good horn bow.