As we all know, China is a country with a long history of five thousand years of civilization . It is also a big country of 1.3 billion population . One of the four ancient civilizations . Our four great inventions of the world made a monumental contribution. At the same time , the Silk Road opened up the country, to the world. China, as a silk origin of the earliest civilizations in the world . During this long historical process , with the progress of social civilization and the ...