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China will continue to participate in international peacekeeping operations and contribute to peace and security in Africa, Hua said.

Poland has been an important trade hub for millennia, both on the ancient Amber Road and the Belt and Road initiated by China. Many of the China-Europe freight trains launched in recent years, which have been brought under the family brand CHINA RAILWAY Express earlier this month, also pass through the country.

Therefore, all sides have to act in a wise, responsible and patient manner and gradually find a fair and long-term sustainable solution, he added.

"The Summer Davos Forum has played an active role in promoting exchanges and cooperation between China and the world since it was first held in 2007," Li told Schwab.

Liu pointed out that territorial sovereignty is not within the scope of the UN Convention on the Law of the Sea (UNCLOS), whose preamble states that it establishes a legal order for the seas and oceans "with due regard for the sovereignty of all States".