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As Manzhouli's rail system has developed, so too has its road port, which is now the only one in China with 24-hour customs clearance.

Argentine students in an advanced Chinese language class hold papers with "G20 Argentina welcomes you" written in Chinese characters on Wednesday at the Confucius Institute at the University of Buenos Aires in the country's capital. XU JINGXING/CHINA DAILY

Arupendra Mozumdar, senior program officer of the Population Council said on the positive side the decline in infant mortality rate among the BRICS countries is the fastest. BRICS refers to Brazil, Russia, India, China and South Africa.

Approved by the Standardization Administration, the standard will be put into practice from Jan 1, 2020.

Around 200 tombs from between the Warring States period and the Western Han Dynasty (206 B.C. - 25 A.D.) have been found since the excavation work started in 2012.