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Guokr, a website committed to popularizing science, on Sunday posted a guide on how to select pollutant-proof masks and wear them correctly. It was forwarded over 1,100 times on Sina Weibo, a popular microblogging site, on Monday.

While many people criticize Xiaofeng for putting doctors at risk by concealing his HIV-positive status before the surgery, Li Hu, who released Xiaofeng's story at the Internet, expressed his understanding, as he is also HIV-positive.

"The development of new information technology, including mobile Internet, the Internet of Things (IOT) and cloud computing in recent years has posed severe challenges to information security," Li said.

Two of the cases involved people who pretended to be journalists in order to extort "hush money" from their targets.

Fourthly, the two sides should deepen cooperation in environmental protection and explore new cooperation patterns, he said.