1. What does it make of?
Ancient raw material
Bark(树皮) Fishing net cloth hemp heads(麻头)
பைடு நூலகம்
3. produce
There are four main steps I will introduce to you
3. produce
2. Influence to the world
The four great inventions in the European civilization gradually spread to the west before, become the necessary premise of “Bourgeois(资产阶级) development"
3. produce
Second
Beating（打浆）
Use the method of cutting and struck （捶捣） staple fiber, and make the fiber broom(帚化), and become the pulp(纸浆);
3. produce
Third
2. Influence to the world
Marx pointed out: Gunpowder blew up the knight(骑士) class Compass（罗盘） opened the world market and set up colonies（殖民地） Printing is becoming protestant tools
and Africa 16th century: Amrica 19th century: Oceania
5. Influence
It is a revolution of writing material. And it is easy to carry, the range is not constrained(强迫), driving the Chinese, Arab（阿拉伯人）, European and the world's cultural development.
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Separation of raw material
To use the retting leaching（沤浸） or
First
cooking methods for raw materials in
alkali（碱） degumming（脱胶）, and
scattered into fibrous（纤维状）;
papermaking造纸术
1. Science and technology
Chinese ancient astronomy calendar
1. Science and technology
Ancient Chinese mathematics achievement:
1.Nine chapters of arithmetic《九章 算术》
Paper-making is one of the four great inventions of China, the paper is the Han long experience accumulation and the crystallization of the wisdom of working people, human a brilliant invention in the history of civilization.
Papermaking technology
4. Development
Invented
Only writing material
105 2 century 3 to 4 century
Popularize
2. Main inventor：
Cai Lun
?—121 The god of paper Official Killed by himself
3. produce
fourth
Dry Namely the wet paper to dry, peeling then became a paper.
4. Spread
6th century: Korea 7th century: Japan 8th century: Arab States and India 12th century: Europe
Manufacture paper with pulp（抄造） Namely make pulp water penetration into slurry, then used for paper pulp (woven bamboo mat) and get the pulp in paper to woven thin sheet of wet paper;
2. 《周髀算经》
1. Science and technology
The ancient Chinese achievements in physics medicine geography architecture and so on.
The four great inventions were important symbols of China’s role as a great world civilization.