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"China will work with all parties to uphold free trade and multilateral trade system and maintain a common interest of all countries in the world," he said.

"China, as the first country to sign the UN Charter, has consistently and scrupulously adhered to the purposes and principles of the Charter and has unfailingly supported efforts to defend the authority and functions of the United Nations," Zhang Jun, China's permanent representative to the UN, said in remarks to the Security Council, which held a debate on upholding the founding treaty of the UN nearly 75 years after its adoption.

"Chinese contractors not only need to work closely with financial institutions to ease the financing bottleneck, but need to fully consider the interests of various stakeholders and pay attention to the ecological environment," he said.

"Collecting materials, such as product advertising, transaction messages and chat records with sellers as evidence is also a necessity," she added.

"China will execute a more proactive opening-up strategy in Hainan and build an important gateway for opening up toward the Pacific and the Indian Ocean," said Wang Shouwen, vice-minister of commerce.