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There are more than 220 million people aged at 60 or older in China, 16 percent of the total population.

China has for years been Mongolia's largest trading partner and largest source of foreign investment. According to official statistics, two-way trade has expanded 50 times over the past two decades.

China lays store by the construction of the BDS, ranking it one of its national key technical projects that supports its innovative development strategy.

Acting on the instructions of Archangelos, the Ministry of Transport's Nanhai Rescue Bureau launched rescue mission, but the tanker was towed out of danger by a third party.