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China still greatly depends on heavy and chemical industries in its industrial structure and greatly relies on coal for energy. Besides, environmental accidents occur frequently, he said.

China on Thursday demanded from Canada and the US the immediate release of Huawei chief financial officer, Meng Wanzhou, and a clarification of the reasons for detention, Foreign Ministry spokesman Geng Shuang told a daily news conference.

China stands ready to work with all the participating parties, including the UK, to conclude an ambitious and pragmatic Post-2020 Global Biodiversity Framework at COP15 through an open, transparent and parties-driven process. Together we can draw a blueprint that is both grand and feasible, and we can open up broader prospects for global biodiversity protection in the future.

China is willing to participate in international cooperation in COVID-19 prevention and control with concrete actions, to support the WHO's professional and coordination role, and to help developing countries with vulnerable public health systems effectively respond to the epidemic, Chen said.

China should make renewed efforts to keep the economy afloat as the nation faces growing downward pressure, according to leading economists.