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Caishikou and Guohua, two major gold markets in Beijing, raked in more than 400 million yuan from the three days' sales of gold products, the center said.

The successful maiden flight of Yun-20 is significant in promoting China's economic and national defense buildup as well as bettering its emergency handling such as disaster relief and humanitarian aid.

The Beijing Youth Federation has also joined the campaign against the use of firework, saying that although the smog "has been blown away, our fate can not simply depend on the wind."

-- The Chinese Sunway BlueLight supercomputer, which was built with domestically produced microprocessors and is capable of performing around one-thousand-trillion calculations per second, on Sept. 11 passed the examination of the experts panel organized by the Ministry of Science and Technology.

China has more than 500 million netizens with the Internet, becoming an economic engine as well as a platform for freedom of speech.