When it comes to rockets, everyone will think of Katyusha in the Soviet Union. Rockets are an important tool for human beings to achieve space flight, and China is the birthplace of rockets. In fact, rockets are fired with crossbows after flammable materials are tied to the shaft. This is called rockets, from thunderbolt to flying crow to fire dragon.

No.65438 +0 thunderbolt:

Thunderbolt made of bamboo fence is spherical, with a diameter of about 12 cm and a shell length of 10 cm. The medicine is transported in the barrel, and the medicine pipeline is connected with the medicine pipeline. There are more than a dozen layers of paper outside the barrel, and wings are installed on both sides. It is driven by its own drug delivery. This is the original rocket.

No.2 Shenhuo Flying Crow:

Divine fire flying crow, woven into a crow-like basket with bamboo poles or reeds, sealed with paper outside and filled with gunpowder. Crows have a head and a tail in front and back, and paper wings on both sides. Four small rockets are inserted obliquely under the wing, a small hole is drilled from the crow's back, and gunpowder wires are installed to connect with the rockets under the wing. After the rocket was ignited, it produced thrust, which made the flying crow soar and fly hundreds of meters away. This is an early parallel rocket.

No.3 dragon water:

When the dragon comes out of the water, a wooden faucet and dragon tail are installed in the bamboo tube, and several rockets are installed in the tube. There are two rockets in front of and behind the dragon body, which are connected by a gunpowder thread. When launching, first ignite the rocket outside the tube to push the dragon forward, then ignite the rocket inside the tube, and then launch it from Longkou to the target. This is an original two-stage rocket, three early rockets, and it can also be said that it is the originator family of rockets.