During the Kangxi period, the Qing Dynasty used red cannons in its war with Tsarist Russia.

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Most red cannons are about 3 meters long, have a caliber of 110-130 mm, and weigh more than 2 tons.

The red cannon is a British-made heavy front-loading smoothbore cannon between the 16th and 19th centuries. After being imitated by the Chinese, there are hundreds of varieties. Its technical characteristics are: 1) The ammunition is relatively heavy, ranging from several kilograms to 10 kilograms. Projectiles are spherical solid bullets made of stone, iron, lead and other materials. They are ingenious and have various shapes and methods of use. They directly impact the target and cause damage. Such a proportion of the ammunition ensures a longer range and greater lethality. (2) The gun barrel is 2 to 3 meters long, thin at the front and thick at the back. The caliber is mostly above 100 mm, and the diameter ratio (referring to the ratio of the distance from the fire door to the muzzle to the inner diameter) is mostly between 20 and 40. . The casting is extremely complex, using the integral mold casting method, with scientific procedures and French requirements, and the cooperation of new equipment, instruments and other auxiliary facilities. The proportion of each part is appropriate, the probability of the chamber exploding is low, and the quality of the forged cannon is improved. (3) Many series of heavy iron cannons are also made of copper, with a dead weight ranging from 35 to 500 () kilograms. For example, the peak of the development of Hongyi cannon in China was during the Kangxi Dynasty of the Qing Dynasty. Among the 905 cannons built at this time, 201 weighed more than 250 kilograms, and the rest were light cannons below 250 kilograms. (4) Hongyi ammunition is released in a programmed and "gun list" manner. In addition, its tail is thicker and has a tail bead. There are cylindrical lugs on both sides of the gun body at the center of gravity. The artillery uses this as an axis to adjust the firing angle and change the range according to the amount of gunpowder. The gun body is equipped with a front sight and a rear sight, and the ballistic trajectory is calculated according to a parabola with high accuracy. The Hongyi Cannon is carried by a vehicle and can run anywhere.

The range is not far, only three miles at most.