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College students test their artificial intelligence devices in their new tech startup in Xi'an, Shaanxi province. LIU XIAO / XINHUA

Compared with last year, the PM2.5 density in Tianjin on the Lunar New Year's Eve dropped 54.2 percent, according to data from the municipal bureau of environmental protection.

Companies that developed their business in Beijing should provide different sizes of packaging bags and eco-friendly tape, the regulation added.

Coming from Gaizhou city in Northeast China's Liaoning province, Lin has been performing Gaizhou shadow puppetry for 41 years.

Commuters between Nantong and Shanghai no longer have to go to Nanjing to transfer.