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And to accomplish that, those concerned had some physical excavation to do, many Chinatowns having been demolished and buried by then.

Analysts attributed the major decline in the Canadian gas rig counts to the very low gas prices on the Canadian natural gas spot market. The natural gas producers prefer curtailing their production rather than increasing in the current depressed market.

And in an interview with Xinhua News Agency on Wednesday, Wang said Pompeo's remarks are based on a Cold War mentality and negated achievements from interactions between China and the US in the past few decades.

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.

An undated file photo of Maria Butina (R) in Moscow, Russia. [Photo/IC]