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Duke University has apologized to Chinese overseas students after a professor sent them an email saying they should speak English "100% of the time" in a "professional setting'' on campus.

Door-to-door sampling can be arranged for those who have trouble visiting the testing sites, it said.

Duke University removed a Lee statue from the entrance of a chapel on its Durham, North Carolina campus, officials said on Saturday.

Due to differences in the systems in Guangdong, Hong Kong and Macao with a coordinating procedure yet to be fully developed, further coordination and cooperation have met impediments.

Dongfeng Motor plans to sell 150,000 vehicles overseas in 2020, up from 65,000 last year, according to Li.