What were the scientific and technological creations in ancient China?

The scientific and technological creations in ancient China are as follows:

1, global

Seismograph is a masterpiece created by Zhang Heng, a scientist in the Eastern Han Dynasty. The seismograph has eight directions, namely east, south, west, north, southeast, southwest, northeast and northwest, and each direction has a dragon ball faucet.

Step 2 print

Printing is one of the four great inventions of working people in ancient China. Engraving printing was invented in the Tang Dynasty and was widely used in the middle and late Tang Dynasty. In Song Renzong, Bi Sheng invented movable type printing, which marked the birth of movable type printing. He was the first inventor in the world.

3, gunpowder

Gunpowder is one of the four great inventions in China. It is a substance that can burn quickly and regularly under the action of appropriate external energy, and at the same time produce a large number of high-temperature gases. Militarily, it is mainly used as propellant and rocket for bullets and shells.

4. Compass

In ancient times, it was called Sina, and its main component was a magnetic needle mounted on the shaft. Under the action of natural geomagnetic field, the magnetic needle can rotate freely and keep in the tangent direction of magnetic meridian, and the south pole of the magnetic needle points to the geographical south pole, so the direction can be distinguished by using this property.

Step 5 make paper

Papermaking is one of the four great inventions in China, which was invented in the Western Han Dynasty and perfected in the Eastern Han Dynasty. China is the first country in the world to raise silkworms and weave silk. In ancient China, the working people used silkworms to weave silkworms, and the rest of the evil cocoons and sick cocoons were all bleached from silkworms.