It comes after Chinese negotiators agreed to extend their stay in Washington.
Both countries are pushing to strike a trade deal.
The latest development could mean that a breakthrough agreement is on the horizon.
Both nations are desperate for a way out of 2018's punishing trade war.

World Bank approves $700 million for Pakistan's economic stability
China's ByteDance signs deal to form joint venture to operate TikTok US app
India reviewing allegations of antitrust breaches by IndiGo
DXB and DWC boost winter schedules with new routes
Amazon in talks to invest in OpenAI
