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Beijing, for example, aims to lower its PM2.5 density to 60 micrograms per cubic meter in 2017, a challenging target to reach according to meteorologists.

Beijing issued 106,948 patents in 2017, up 4.5 percent from the previous year, with 46,091 patents for new inventions, an increase of 11.3 percent year-on-year according to the Beijing Intellectual Property Office’s latest figures.

Because visitors are required to keep walking in a line and cannot stop in the hall, the line moved relatively quickly and visitors had a wait of only about 10 minutes before entering the hall.

Before the Solano County case, all 59 cases in the US were traced to people who had traveled abroad or had been in contact with those who had visited China.

Before flipping the switch for the lighting, Zhang Qiyue, consul general of China in New York, said China-US relationship has maintained a generally positive momentum since the beginning of this year.