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"Continuing uncertainties in the trade and investment environment have dampened the growth outlook across the world, with a likely impact on businesses and jobs, adding to the urgency and imperative of concluding the RCEP (Regional Comprehensive Economic Partnership)," the ministers said.

"China's relative successes in dealing with two major global crises in the past dozen years certainly stand in sharp contrast with the approach of other leading nations," he said.

"Commitment letters may work as a way to help residents understand that such violations may lead to legal consequences and thus better regulate their daily behaviors," he said.

"China's cooperation with the five countries is not aimed to subvert their cooperation with other nations such as the United States and Japan,"Feng said, adding that different countries' cooperation with the area has different priorities.

"China's internet industry is ever-changing. I'm looking forward to seeing more eye-opening products and concepts at the conference," he said.