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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.

"Farming relies on weather. The harvest is unstable, but working outside ensures me a steady salary," Chen said, adding that although the environment has changed a lot, the income from working on the farmland is incomparable to working in the factory.

"Each of our branch is independently designed, and at the entrance we have a tea space to attract young customers," Guan said.

"Every item on display is of leading-edge technology in its field and with prospects in the international market. Moreover, dual-seat JF-17 and AC312E helicopters make their international air show debut in mock-up," it said.

"Especially, those fields with relatively low policy barriers and technical barriers, such as stomatology, gynecology and obstetrics, and ophthalmology, tend to be approved by the capital market preferentially, turning major investment targets in the short term," Shi said.