1. Papermaking was invented in the Western Han Dynasty and further improved by the famous inventor Cai Lun in the Eastern Han Dynasty.
2. China is the first country in the world that raises silkworms and weaves silk. Those silkworms also inspired the working people. They weave the fragments into thin sheets so that they can write. On this basis, Cai Lun used waste raw materials such as bark and fishing nets to make paper, which was quickly accepted by everyone because of its low cost.
The ancient compass was called Sina, which was mainly composed of a magnetic needle mounted on the shaft. This kind of magnetic needle can rotate under the action of natural magnetic field, thus pointing out the direction for people, and it was often used in ancient navigation, military and measurement. There are three kinds of inventions of compass in ancient China: Sina, compass and magnetic needle.
Gunpowder is a drug that can be ignited by sparks, flames, etc. According to the ancient book Fan Jizi Ran, China had already applied gunpowder to the people as early as the Spring and Autumn Period. This invention was not widely used in ancient times, but it was widely used in modern wars, which played a role in easing the armistice and security defense for mankind. This is one of the important inventions of human civilization.
Printing is an invention based on papermaking. It can be said that there is no printing without papermaking. Printing was invented in the Tang Dynasty and was widely used in the late Tang Dynasty. Later, Bi Sheng invented movable type printing and became the first inventor of movable type printing in the world.