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As the pillar industry of Inner Mongolia, coal is widely said to have made important contributions to its economic and social development.

China's economic growth will recover to over 5 percent in 2022 despite headwinds, as the government has pledged front-loaded policy support to shore up growth, experts said on Wednesday.

The two provinces will also reinforce cooperation in the fields of manufacturing and energy to take advantage of renewable energy resources in the country.

The typical hydrogen-powered bus in Zhangjiakou is 12 meters long and carries eight cylinders of hydrogen fuel on the back of its roof.