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Washington would "lift a rock only to drop it on its own feet" if it attempts to make new difficulties and troubles for the China-U.S. relations, he said.

Li said as the current international situation is complex and changing, China's economy also faces some risks and challenges. As the world's largest developing country, China is willing to fulfill its due international responsibilities and obligations while doing its own job.

On April 8 this year, it threatened again possible tariff hikes against a number of EU products in the civil aviation sector.

In recent years, civic groups, training schools and local institutions across the country have been seeking exchanges and cooperation with China in education, culture and sports, Yao said.

The two leaders met ahead of a summit of the Group of 20 (G20) major economies slated for Friday and Saturday in the Japanese city of Osaka.