Chinese Foreign Minister Wang Yi met with U.S. Secretary of State Rex Tillerson on Friday on the sidelines of a meeting of foreign ministers of the G20 top economies in the German city of Bonn.

It was the first time the two have met since Tillerson became the United States’ top diplomat.

U.S. Secretary of State Rex Tillerson, right, is greeted by Chinese Foreign Minister Wang Yi before a meeting at the World Conference Center February in Bonn, western Germany, Friday, Feb.17, 2017. (Brendan Smialowski/Pool Photo via AP)

Tillerson and Wang noted the recent call between leaders and discussed efforts to advance bilateral cooperation while addressing differences in a constructive manner.

Tillerson also highlighted the increasing threat posed by North Korea’s nuclear and missile programs and urged China to use all available tools to moderate the Democratic People’s Republic of Korea’s destabilizing behavior. The two also discussed the need to create a level playing field for trade and investment.

The pair met to exchange views on two-way ties and issues of mutual concern, the Xinhua news agency said.

Chinese Foreign Minister Wang Yi welcomes U.S. Secretary of State Rex Tillerson before a meeting on the sidelines of a gathering of foreign ministers of the G20 leading and developing economies at the World Conference Center in Bonn, western Germany, Friday, Feb.17, 2017. (Brendan Smialowski/Pool Photo via AP)

In a phone call with Chinese leader Xi Jinping last week, U.S. President Donald Trump changed tack and agreed to honor the one-China policy, a major diplomatic boost for Beijing.

It was the first call between the leaders since Trump took office four weeks ago.

Story by the Associated Press and Reuters.