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Appreciating the central government's resolution of maintaining the "one country two systems" practice, Leung urged the SAR government to put greater emphasis on ensuring the public's better understanding of the policy.

As China is now one of the top commodity buyers in the world, the production loss in China is putting downward pressure on shipments from commodity exporters in places like Australia.

Areas leading on upgrading agenda see rosier economic performance in H1

Around 170 volunteers out of 43,000 people in the trials contracted COVID-19 but 162 were given a placebo, meaning the vaccine was 95 percent effective, the company said. Of the 10 people who had severe COVID-19, one had received the vaccine.

Arcfox's first production model is to hit the market in 2020, and future models are to be sold globally, according to one of its executives.