Discussions between the Chinese and US trade teams are underway, said Vice-Minister of Commerce Wang Shouwen on Monday.

Speaking at a news briefing, Wang said China supports necessary reform in the World Trade Organization to promote its authority and efficiency.

"We hope the G20 summit could further build positive consensus on advocating for the multilateral trading system and opposing unilateralism and protectionism."

The country will stick to open policies, building a free, fair, nondiscriminatory, transparent, foreseeable and stable trade and investment environment, Wang said.

Wang hoped the G20 summit could actively explore new growth drivers and development paths, as well as promote deep integration between trade investment and the digital economy, allowing new technology and knowledge to serve more countries and people.