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British toy store Hamleys starts to run at Wangfujing department store in Beijing, Dec 23, 2017. [Photo/VCG]

Britons realized the huge scale of the UK's waste plastic exports through media reports after China stopped importing the material, just as people also learned about the impact of plastic pollution on the world's oceans through the BBC documentary Blue Planet II.

But China has said that its stance is to keep cooperating with the WHO with openness, transparency and responsibility, including on the issue of tracing the virus origin.

Business associations and educational institutions, such as the Bay Area Council and Stanford University, also criticized the new rules as counterproductive.

Buoyed by low interest rates and excess liquidity, Hong Kong home prices advanced 13 percent in the first 11 months of 2017, according to Rating and Valuation department's private residential property price index. It had surged 430 percent to record highs since 2003 when the local property sector was buffeted by the Severe Acute Respiratory Syndrome outbreak. While homes prices are swelling, property transactions fell from 18,900 in the second quarter of 2017 to 13,200 in the third quarter last year.