Good science
PAPERMAKING
The oldest paper Fang matan Paper
History
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. China is the world's earliest sericulture silk in the world. Han Chinese working people above cocoon silk silk, such as the remaining evil cocoon, cocoon disease such as flocculant with legal system take silk floss. After floating flocculant, woven bamboo mat legacy will be some residual effect. When the number of floating flocculant, woven bamboo mat on the residual flocculant product into a layer of fiber sheet, after dry stripping down, can be used for writing. This flocculant floating there aren't many by-products, and call it HeTi or FangXu on ancient book.
The fourth is dry, namely the wet paper to dry or dry, peeling the became a paper.
The design of the papermaking process
The spread of papermaking
Research shows that this technology spread to many countries even the world . First of all incoming and papermaking in China and Vietnam, followed by adjacent spread to Korea, Japan, is along the Tang Dynasty - Arab - the spread of this line in Europe. Moreover in many countries paper is used for money so this technology helps their economic thus it led a number of economic development.
Consequences
Especially during the Ming Dynasty, Zheng He made expeditions to Southeast Asia for seven times with more than 27000 people and dozens of big ships each time, which contributes to the extension and development of seafaring and foreign trade in the world
By CAI lun in eastern han dynasty (105) of the first year of yuan xing papermaking, improved by CAI lun in the bark, hemp heads and our raw materials such as cloth, fishing nets, after falling, dao, copy paper, drying technology, manufacturing, is the origin of modern paper. This paper, the raw material is easy to find and very cheap, quality is also improved, gradually widely used. In honour of the feat, CAI lun later generations called this paper "Cai Hou paper"
China Ancient Four Inventions 中国四大发明
Magnetic
Compass
It's.....
Through the ages, China is considered to be the first country that invented and used magnetic compass.Nearly two thousand years have passed since our ancestors invented compass.

Printing, known as
“mother of civilization”, was another great invention of the Chinese people. It has history includes a long and

block printing (雕版印刷) and movable type printing ( 活 字 印 刷 ).
You can say that, the reason why seafaring can develop rapidly in modern times is because it benefits from the invention and application of magnetic compass.

Block printing (雕版印刷)
Block Printing was probably invented between the Sui and Tang dynasties. The process of block printing started with the cutting of wood into blocks, and then characters were engraved in relief on the blocks. Ink was brushed on the engraved block and a white sheet of paper was spread across it and then brushed with a clean brush on its back leaving an image when
Consequences
It has a big influence on military, economy, seafaring; it pushes forward the great discoveries of geography. Without magnetic compass, Columbus couldn't arrived new continent; China is still adopting a policy of seclusion and comes to a standstill.
Effect
In the word paper is the crystallization of labor and knowledge, it helps people study, remember information and do some cleaning and so on. Paper is a bridge to heritage cultural of mankind. It is a witness of the great civilization and the famous thought. It is the direct teacher of human developed. It is an essential assistant to human life.
Importance
From simply using it to find direction and judge fengshui to magnetic compass being used in world navigation, till today, various newly-invented magnetic compasses are applied broadly.
Good science
China's ancient science and technology was once brilliant, which bring us great hoБайду номын сангаасor. The spread and application of magnetic compass in western countries urge us to have further understanding of the significance and influence of magnetic compass in the world.
Cai lun
The design of the papermaking process