H哈尔滨防洪纪念塔ello 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 ud 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 less time and become easy to record information. It’s a great achievement in the history.
Compass
It was invented in the Warring States. After people found that a magnet could give directions, the compass 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. 去重Not everywhere has a lighthou, so a compass is very uful for sailing. Even at a new place people will not lo their way with a compass.
Gunpowder
Gunpowder is also called black powder. It was invented in Tang Dynasty, about 9th century. It began to be ud in military affairs and made great contribution for China. Guns, aircrafts冬虫夏草有什么用 could be invented afterwards.
Papermaking technology, typography, compass and gunpowder are 金银岛简介Four Great Inventions of the Ancient China. They have made great contributions for people all over the world. As a Chine 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 火影完结[tai'pɔgrəfi] 活字印刷术
5.compass ['k清蒸甲鱼的做法ʌmpəs] 指南针
表示成功的成语6.the Warring States 战国
7.magnet ['mægnit] 磁铁,磁石
生产调度8.Gunpowder ['gʌn,paudə] 火药
9.military affairs 军事
