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An unmanned vehicle has been put into use in Nanjing's residential community Binjiang Yihao. According to Meng, it can take elevators, plan the best routes and send location information automatically.

An outside view of the Palestine Liberation Organization's office in Washington, US on Sept 10, 2018. [Photo/IC]

And his answer is that there's limited space on campuses, and universities are already fully enrolled.

Andy Lau shows up for the first time and speaks at the premiere of his new film The Adventures in Beijing, Aug 8, 2017, after six-month convalescence from injury. [Photo/China.org.cn]

Andrew Norton, a professor of higher education policy at Australian National University in Canberra, said international collaboration was vital for Australia, since it could never compete with the vast research resources of countries such as China and the US. He said Australia relies on international research.