Hello everyone.Today I’m going to talk about the Four Great Inventions of the Ancient China.Do you know their name in English? If you don’t, let me introduce to you.
Papermaking technology During the Eastern Han Dynasty, Cai Lun summed up the experience of forefathers, began to improve papermaking technology.He used a lot of simple things and produced the ‘Cai Hou’ paper.This kind of paper is thin and can write easily.He made enormous contribution for China.It was produced to other countries after about 500 years.Typography Typography is a kind of printing.Before printing was invented, people had to record information by writing or other ways.But it always took a lot of time.Then Bi Sheng invented typography and improved the printing technology.It began to take le time and become easy to record information.It’s a great achievement in the history.Compa
It was invented in the Warring States.After people found that a magnet could give directions, the compa was invented.It was a magnet made into a shape of spoon.When it stops, the spoon can point to the south.Then, it was produced to Europe in the 13th century.Not everywhere has a lighthouse, so a compa is very useful for sailing.Even at a new place people will not lose their way with a compa.Gunpowder Gunpowder is also called black powder.It was invented in Tang Dynasty, about 9th century.It began to be used in military affairs and made great contribution for China.Guns, aircrafts could be invented afterwards.
Papermaking technology, typography, compa and gunpowder are Four Great Inventions of the Ancient China.They have made great contributions for people all over the world.As a Chinese person, we should remember and be proud of them.
That’s all for my duty.Thank you for listening.1.sum
sum up 总结 2.forefather
[\'fɔ:,fɑ:ðə] 前人 3.be produced to
传入
4.typography [tai\'pɔgrəfi] 活字印刷术 5.compa [\'kʌmpəs] 指南针 6.the Warring States 战国 7.magnet [\'mægnit] 磁铁,磁石 8.Gunpowder [\'gʌn,paudə] 火药 9.military affairs 军事
