Who invented gunpowder?

The invention of gunpowder plays an important role in the development of the world and mankind. It is not only used in the military, but also used in production and construction such as road construction and mountain mining. The application of gunpowder and firearms in Europe promoted the early entry of western countries into capitalist society and the development of world economy and culture.

Four great inventions of ancient china: Papermaking, compass, gunpowder and printing.

Papermaking: In the first year of Yuan Xing in the Eastern Han Dynasty, Cai Lun invented papermaking. He made paper from bark, hemp head, cloth, fishing net and other raw materials through crushing, ramming, papermaking and baking, which is the origin of modern paper. This kind of paper is easy to find, cheap and has improved its quality, so it is gradually widely used. In order to commemorate Cai Lun's achievements, later generations called this kind of paper "Cai Hou Paper".

Printing: Printing originated from Taoist block printing. It was active in block printing in Tang Dynasty. Movable type printing was developed and perfected by Bi Sheng in Song Renzong era, which produced movable type printing and spread to Europe by Mongols. Therefore, Bi Sheng is called the ancestor of printing. China's printing is the pioneer of modern human civilization, which has created conditions for the wide spread and exchange of knowledge. Printing first spread to Korea, Japan, Central Asia, West Asia and Europe. The invention of movable type printing is a great technological revolution in the history of printing. The method of movable type printing is to make the positive and negative character patterns of single words first, then select the single words according to the original manuscript, arrange them in the font plate, ink them, and then remove the font after printing, so as to use them again in the next typesetting.

Gunpowder: Gunpowder is mainly used as the propellant of bullets and shells, the propellant of rockets and missiles and the energy source of other driving devices in the military, and is an important part of ammunition. Outstanding achievements in the history of human civilization. Because of its lethality and shocking power, gunpowder is one of the important inventions of human civilization, which has brought the functions of relieving armistice and security defense to mankind.

Compass: Compass is the result of the working people of ancient Han nationality's understanding of the magnetism of objects in long-term practice. As one of four great inventions of ancient china, its invention has played an inestimable role in the development of human science, technology and civilization. In ancient China, the compass was first used for rituals, etiquette, military affairs and divination, and to determine the orientation when looking at geomantic omen.