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By international standards, a country or region is considered to be an "aging society" when those aged 65 or over account for 7 to 14 percent of the total population. Once that amount goes over 14 percent, the country is considered a "super aging society."

By the end of 2017, China had amassed more than 18,000 AI specialists, behind only the US. But, China had only 977 top-tier AI specialists, just one-fifth of the number in the US, ranking sixth globally.

By the end of 2014, about 75 percent of Tibet's population were living in rural areas, data from the Tibet Yearbook showed. They rely on agriculture for subsistence. Rice, barley, wheat, honey, and meat are the main products they trade.

By early afternoon, more than 580 flights have been canceled at Chicago O'Hare International Airport, the air hub's management tweeted.

By the end of March, the size of the outstanding bond market debt was 103 trillion yuan.