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At least 70,000 colleges accommodate more than 8 million people, who prefer to gain new skills and knowledge instead of killing time at home.

At Alibaba's annual computing conference on Wednesday, Jin Zhi, director of Hangzhou municipal bureau of public security, said the system has been used to optimize the management of 1,300 traffic lights at intersections and to connect 4,500 traffic monitoring video cameras.

Associated Press writer Tom Krisher in Detroit contributed to this report.

At least seven cities, including Beijing, Shanghai, Guangzhou and Shenzhen－also in Guangdong－as well as Hainan province have imposed caps on car purchases by requiring residents to obtain license plates either through bidding or a lottery.

At a Windows Creator event today in New York City, the?Redmond tech giant debuted?new capabilities for Windows 10 and Xbox One that incorporate technology from Beam, the startup Microsoft acquired in August.