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Currently, around half the 3 million couriers from express delivery companies work more than 10 hours a day, and few of them have employment contracts or insurance, Xu said.

Currently, Siemens AG is leading a nearly 500-member research and development team in China, the second-largest after Germany, according to Chen Qixiao, head of Siemens Corporate Technology Suzhou and head of development for the internet of things services. The corporate technology team provides research and development support to the six groups of Siemens AG.

Cui Tiankai, China's ambassador to the US, said China wants to end the trade conflict, but the US position keeps changing, "so we don't know exactly what the US would want as priorities".

DENVER, the United States -- A recent study using satellite photos of wildfire devastation in California and Colorado suggests forest recovery after "high severity" infernos might create bleak, barren landscapes in the future.

Currently, navigators tell a spacecraft where to go by calculating its position from Earth and sending the location data to space in a two-way relay system that can take anywhere from minutes to hours to deliver directions.