Li Yunlong</a> once showed this pistol to an engineer who studied conventional weapons. The engineer knew it at a glance and told him that this pistol was designed by Mr. Browning, a famous firearms designer in 1906, and was designed by the Belgian FN company. It was produced and became a famous gun for a while. Later, due to the good performance of this gun, many countries in Europe copied it. It is said that the sales volume has reached 4 million.