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China has four world-famous inventions: gunpowder, compass, printing and papermaking.
China has four world-famous inventions: gunpowder, compass, printing and papermaking.
This makes our ancient China an ancient civilization.
This makes China an ancient civilization.
China's four great inventions have played an irreplaceable role in various fields of science and technology.
China's four great inventions have played an irreplaceable role in various fields of science and technology.
Gunpowder We invented gunpowder.
Gunpowder, gunpowder is our invention.
What did gunpowder bring us?
What did gunpowder bring us?
It brought fireworks, firecrackers, fireworks, mining and aerospace.
It brings fireworks and firecrackers, which are used for making fireworks and firecrackers, mining and developing aerospace industry.
So far, gunpowder has played an important role in our history.
Until today, gunpowder has played a great role in our history.
Compass, Zheng He of China took the compass to the Western Seas for seven times, which opened a precedent for China culture to enter the world.
Compass, Zheng He of our country used the compass to make seven voyages to the West, which initiated the Chinese national culture to the world.
The earliest compass in China was called Sinan.
China, the earliest compass, called it "Sina".
Compasses are also used for navigation and positioning for military personnel.
Compasses are also used for navigation, and military experts determine the position.
Printing, it is said that a man named Bi Sheng invented letterpress printing.
Printing is said to have been invented by a man named Bi Sheng.
With the development of modern industry, new printing technologies such as laser phototypesetting and digital technology will be applied to modern life.
With the development of modern industry, new printing technologies such as laser phototypesetting and digital technology will be used in modern life.
Cai Lun is a great inventor of papermaking in China. He invented papermaking.
Papermaking, Cai Lun is a great inventor in our country. He invented papermaking.
With the invention and spread of papermaking, the carrier cost of characters has been greatly reduced, which has greatly promoted the development of science and technology and economy in the world.
The invention and spread of papermaking greatly reduced the carrier cost of words and greatly promoted the development of science and technology and economy in the world.
The four great inventions made us proud and promoted the continuous development of Chinese civilization, but now some of our inventions are backward. For example, papermaking and printing are very advanced abroad. Therefore, we should study hard and master knowledge to make our motherland stronger.
The four great inventions once made us proud and promoted the continuous development of Chinese civilization, but now we are in a backward situation in some inventions, such as papermaking and printing, which are very advanced abroad. Therefore, we should study hard and master knowledge to make our motherland stronger.