China said it attaches "great importance" to remarks by US President-elect Donald Trump on developing bilateral ties.

"China is willing to promote the stable, healthy and sustainable development of Sino-US economic and trade relations," Foreign Ministry spokesman Guo Jiakun said in a media briefing on Tuesday, citing mutual respect and win-win cooperation.

Trump on Monday said he and President Xi Jinping have been speaking through representatives, and that he believes the two leaders will get along.

"We've already been talking. We've been talking through their representatives," Trump said in an interview.

"And I think we will probably get very well, I predict," he said. "But you know, it's got to be a two-way street."

Guo did not confirm that any exchanges had been made through the leaders' aides, but said the two countries have maintained communications through various means.

Meanwhile, Vice Premier He Lifeng held talks via video link with US Treasury Secretary Janet Yellen, with both sides agreeing to maintain communication, manage differences and continue stabilisation of economic relations during the political transition period in the US.

According to Xinhua News Agency, the video call was candid, in-depth and constructive, and both nations agreed on the importance of maintaining communication.

Xinhua added that the Chinese side expressed concern over US economic and trade restrictions on China, in particular clarifying Beijing's position concerning the recent trade investigation initiated by Washington.

Yellen, meanwhile, raised concerns about "malicious cyber activity" by Chinese state-sponsored actors, according to a statement by the US Treasury Department. (Agencies)