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Eighteen percent of the overseas respondents had heard of the "Silk Road economic belt" and the "21st century maritime Silk Road," and 40 percent in Indonesia, India and other countries situated along the routes.
The average density of PM2.5 fine particulate matter in Beijing was 58 micrograms per cubic meter last year, meeting the target set by the State Council and 20.5 percent less than in 2016.
China's high-speed rail was the most widely recognized sci-tech achievement from the country.
At the end of 2016, the ratio of permanent urban residents to total population stood at 57.35 percent, up from 52.57 percent at the end of 2012, data from the National Bureau of Statistics showed.
"China will keep its door wide open and not close it," Xi told participants in last year's meeting.
