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"Compared with other types of urban rail transportation, maglev trains are quiet and can achieve high speeds because they don't actually ride on the rails with wheels but hover centimeters above the track through the use of magnets, avoiding the slower speeds caused by friction," said Sun Fuquan, a researcher at the Chinese Academy of Science and Technology for Development in Beijing.

"China's hybrid rice research is leading the world and has made significant contributions in easing Africa's food shortage problems. Compared with conventional rice, hybrid rice has obvious advantages in production. In China, grain output from hybrid rice plantations can feed up to 80 million people," Ma said.

"China will firmly support related companies to safeguard their own legitimate rights and interests, and firmly uphold international economic and trade rules," he said at a news conference in Beijing.

"Currently, there are 144 comprehensive bonded zones," said Chen Zhenchong, a leading official in charge of the customs body, adding the zones are of the highest level of openness, with the most favorable policies, complete functions and simplified procedures in China.

"Crazy new technology is moving around and there are loads of people, and it's always busy," he said.