The province will accelerate transportation links between Hainan and countries and regions along the Belt and Road. A total of 100 international air and sea routes are expected to open in three years, Liu added.
Bangladesh President Abdul Hamid said China has made great achievements in building the community with a shared future for mankind under Xi's leadership, and the ties between China and Bangladesh will be further boosted and deepened.
China's use of natural gas surged by 19 percent in 2017, as areas across northern China switched to this relatively clean fossil fuel and away from highly polluting coal in residential heating and industrial uses, according to data from the former Ministry of Environmental Protection, now called the Ministry of Ecology and Environment.
China endeavors to uphold international fairness and justice, Xi said, adding that China will not impose its will on others.
Air pollution in northern China is usually worse in the winter, but this past winter saw unprecedented improvement. Largely due to the policy decision to shift to natural gas for heating and many industrial uses, the average concentration in Beijing of the most hazardous small particulate matter, PM2.5, fell in January by 70 percent year-on-year to 34 micrograms per cubic meter, the Beijing Environmental Protection Bureau said in a statement. It was the first time the figure was under the national standard safe level of 35, the bureau said. However, recent weeks have seen many days of high air pollution, although coming weeks are forecast to be clear.
China also has dived into the sharing economy, with ride-sharing company Didi Chuxing buying out Uber's business in China and fast-growing Ofo starting to offer bike rentals in major cities across the United States.