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China is forecast to pass the United States to become the world's largest civil aviation market by 2022, the International Air Transport Association (IATA) said in its air passenger forecast.

China has witnessed rapid economic development over the past three decades. Yet it has come at a price, as industrial activity has degraded air, water and soil quality nationwide. In key areas, such as the Beijing-Tianjin-Hebei cluster, smog has become a major headache for residents and local authorities.

China has urged the parties involved in the Korean Peninsula nuclear issue to exercise restraint and avoid any actions that could increase tensions. It has proposed a "dual-suspension" for solving the issue and said it is open to helpful proposals from relevant parties.

China is ready to advance infrastructure projects and production cooperation with Pakistan, Tajikistan and Uzbekistan, Premier Li Keqiang said while meeting individually with the three countries' prime ministers on Thursday in Sochi, Russia.

China is the world's largest consumer of platinum group metals. It accounts for a quarter of global demand. The country, however, lacks such natural resources and depends on imports and recycling. Platinum group metals are used as emission and process catalysts for major industries.