Dunhuang (located at present west to Dunhuang County of Gansu Province) was a vital communication line from China to the Middle Asia and Europe in ancient times. There are a lot of art treasures such as mural paintings and sculptures from 4th century to 14th century left in Mogao Cave (Cave of a Thousand Buddhas). [...]
There are over 1 million species of insects in the world. Seven-dots ladybird (Coccinella Septempunctata) is famous in China, because it preys on pests. There are about 5000 species in the ladybird family, most of them are beneficial insects. They are the natural enemy of aphids on the wheat, earthnut, and cotton. Sympetrum Croceolum belongs [...]
The 1st United Nations Conference on Human Environment was held from June 5 to 16,1972 in Stockholm, the capital of Sweden. The theme is environmental protection and pollution prevention. In the conference, Human Environment proclamation and 109 suggestions ware passed. The 27th United Nation Assembly made June 5 as the World Environment Day. ¡°We have [...]
In May, 1942, Mao Zedong delivered a speech in the rectification movement in Yan'an. Soon Talks at Yan'an Forum on Literature and Art was published. In this talk, he summarized the fundamental historical experience in the development of literature and art since the revolution on 4 May, 1919. Taking the actual conditions in base area [...]
China has a vast area of beaches and shoals measured nearly 10000 mu which provide a natural condition for offshore breeding. The designer pursues a kind of natural style in designing this set of stamps. (4-1) Pagrosomus Major, with red color, is the most precious marine livings. (4-2) Penaeus Chinesis can gives you a kind [...]