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As the secretary-general stated, in the past 150 years, about half of all living coral has been lost, and in the past four decades, plastic pollution in oceans has increased tenfold.

As the Chinese yuan is not freely convertible under the capital account, the central bank has to purchase foreign currency generated by a trade surplus and foreign investment in the country, adding funds to the money market. Such funds are an important indicator of cross-border foreign capital flows and domestic yuan liquidity.

As stipulated in the Law of the People's Republic of China on Safeguarding National Security in the HKSAR, information relating to the work of the committee shall not be subject to disclosure; and decisions made by the committee shall not be amenable to judicial review.

As the old Chinese expression goes, it's like killing a chicken to terrify the monkeys; in other words, it's small enough to jail, too big to fail, Sung added.

As the country's financial sector further opens up, HSBC has become one of the first foreign banks to join Shanghai Gold Exchange International Board in September 2014. In July 2017, it became one of the first market makers for the bond connect mechanism linking the Chinese mainland and Hong Kong markets.