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China began its research on combustible ice in 1998, as one cubic meter of combustible ice, a kind of natural gas hydrate, equals 164 cubic meters of regular natural gas.

China gave the nod to car sharing services last August, releasing a guideline to support the country's booming car sharing industry and standardize its development.

China currently has 26 underground gas storage facilities with a storage capacity of approximately 20 billion cubic meters as of the end of last year.

China banned people with poor credit records from buying airline tickets 17.46 million times and purchasing train tickets 5.47 million times between October 2013 and December 2018, a spokesman said on Saturday.

China has long dominated global table tennis, winning 28 of a possible 32 gold medals since the sport was introduced to the Olympic Games in 1988. France, which saw a drop in its world ranking following the retirement of Jean-Philippe Gatien, is capitalizing on China's expertise by hiring Chinese coaches.