Firecrackers with two kicks are a traditional folk product, which is often used in festivals, weddings, commemorative ceremonies and many other occasions. It is based on the principle of taking off due to the reaction force generated when the bottom gunpowder explodes and hits the ground: the paper tube with double firecrackers is divided into two layers, the lower gunpowder is used to send firecrackers to the sky, and the upper gunpowder explodes in the air after taking off 10-20 meters.

It is dangerous to let it out, big or small. Inferior skirting boards are prone to air leakage and moisture, which will lead to two explosions on the ground, or only one. When purchasing, you should choose a regular manufacturer.

The two kicks are as follows:

In short, kicking two feet is to wrap gunpowder in dense paper, use the expansion generated by gunpowder explosion to fry paper and make noise to entertain the masses. Because there are two sounds, it is called two kicks.

Diode gun is a kind of firecrackers, and its powder is divided into two layers with cement or soil. The back door at the bottom is not tightly blocked, and the airflow generated by the explosion of gunpowder at the lower level "pinged" through the back door and sprayed downward. The downward jet of air generates upward thrust, pushing firecrackers into the air. At this time, the fuse just ignited the gunpowder sealed at the upper end, and it quickly burned and exploded, and the foot slammed in the air. Fireworks also rely on the rapid combustion of gunpowder, and the thrust generated by the explosion is lifted to the sky.