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"Emissions from steel enterprises has a marked effect on air quality. None of the top 20 cities for steel output - which are responsible for 51 percent of the country' total capacity - has air quality that meets the national standard. The average density of tiny PM2.5 particulate matter in these cities is 28 percent higher than the national average," said He, who is also an academician of the Chinese Academy of Engineering.

"Do you like me?" Jia Jia asked.

"Every time our team got a medal in world-class competitions, I was wearing this pair of shoes."

"Deeply saddened by the destruction we saw last night in Center City. In looting downtown, these individuals not only desecrated private businesses, they also desecrated the important message that was heard in the earlier, peaceful protests," Mayor Jim Kenney said on Twitter on Sunday.

"Different age-groups can be seen online and offline. This makes offline stores a strong complement to online services," said Zhang.