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By 2018, China had 249 million people aged 60 and above, accounting for 17.9 percent of its total population, becoming a country with the largest and fastest-growing aged population in the world.

BEIJING, March 29 (Xinhua) -- China and Cambodia vowed to promote law enforcement and security cooperation on Friday.

"Wuhan is a competitive applicant not only because of its abundant wetland resources, but also due to its pioneering wetland protection mechanism," said Lei Gang, an expert with World Wildlife Fund (WWF) China's freshwater program.

Local governments should live up to their supervision duties and take effective prevention measures to fundamentally keep safety accidents from happening, Wang said.

"The 27 months has witnessed tangible achievements on China-Kenya cooperation," said Li, adding that the China-funded Mombasa-Nairobi Standard Gauge Railway that was launched on May 31, 2017 has come to symbolize fruitful cooperation between the two countries.