English composition description of the ancient Chinese compass

Compass,gunpowder,papermaking skill and typography,is China ancient four inventions,it is one of the signs that China become to the ancient civilized country,occupy the important position in the history of human civilization.

Compass,gunpowder,papermaking skill and typography,is China ancient four inventions,it is one of the signs that China become to the ancient civilized country,occupy the important position in the history of human civilization. This is one of the symbols that China has become a country of this ancient civilization and occupies an important position in the history of human civilization.

During the Eastern Han Dynasty palace eunuch director Cai Lun workshops, summed up the experience of forefathers, began to improve papermaking technology. With bark,hemp head,rag,soaked in water,after chopping,cooking pulp,and then filtered water,flat to dry,producing the famous Cai Hou paper. This paper thin,toughness,high durability,easy writing,can be mass production.

During the Eastern Han Dynasty, when the eunuch Cai Lun was in charge of the handmade workshop in the palace, he summarized the experience of his predecessors and began to improve the technology of papermaking. With the bark, hemp, rags, etc., soaked in water, after chopping, steaming pulp, then filtered out the water, flattened and dried to produce the famous Caihou paper. This paper is thin, light, tough, cheap and durable, easy to write, and can be mass-produced.

Cai Lun of the invention of papermaking and perfecting process, made enormous contribution, was later revered as the paper 's founder. The invention of papermaking,is one of the earliest effects of human knowledge propagation learning revolution, and our civilization began to write on the paper. The invention of papermaking, is one of the earliest effects of human knowledge propagation learning revolution, and our civilization began to write on the paper.

Cai Lun in the invention of papermaking and the process of perfecting the paper, made a great contribution to the posterity honored as the paper's ancestor. The invention of papermaking is the earliest revolution in learning that affected the dissemination of human knowledge, and from then on our civilization began to write on paper.