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As of 2017, the number of people aged 80 and above had totaled 26 million in China, accounting for 1.8 percent of the country's total population. The proportion may rise to 2 percent in 2025 but rocket to 8 percent in 2050, the report said, citing a United Nations publication titled "World Population Prospects: The 2017 Revision."

As of today, the line has been in trial production for six days, with line speed hitting 500 masks per minute. The company has already delivered 3 million masks to the market, and production efficiency will increase in the future.

As in other cities where it operates, Ofo has assembled a local support team in pre-planned riding areas in Sydney to manage bicycle distribution and maintenance. Employing electronic fencing system and GPS, the team is able to determine real-time traffic patterns and usage demand and then allocate the bikes accordingly.

As of Sunday afternoon, more than 2.2 million confirmed COVID-19 cases have been reported in the United States, with over 119,800 deaths, according to a data tracking tool developed by Johns Hopkins University.

As of Sept. 1, it had released information on 1,918 children and helped locate 1,847 lost children across China, including 41 who had been abducted.