Positive interaction

If any entity or individual is found through investigation to be conducting activities in the Chinese territory that are against the UN Security Council resolutions or Chinese law, China will hold them accountable seriously, Hua said.

"China resolutely opposes any country using its own laws to carry out long-arm jurisdiction on Chinese companies or individuals," she said.

Hua also said it is vital that for positive interaction between Seoul and Pyongyang to lead to political talks, and that the Six-Party Talks are still viable.

It is also very important if such interaction leads to talks between Washington and Pyongyang, as the key to solve the Korean Peninsula issue lies in the hands of the two sides, Hua said.

An anonymous official from the Republic of Korea said on Wednesday now is the "best time" for Pyongyang to hold dialogue with Washington, the Yonhap News Agency reported.

Hua urged Washington and Pyongyang to work together and seize the window of opportunity to make progress in solving the issue through dialogue.

The Six-Party Talks have played an important and irreplaceable role in solving the Korean Peninsula issue, Hua said, responding to the official's comments that it would be hard to resume such talks.

"We believe the Six-Party Talks are still viable," Hua said, adding that parties involved will be able to find a way to resume the talks if they understand and respect each other, resort to their wisdom and cultivate trust through negotiation.

Meanwhile, Russian Foreign Minister Sergei Lavrov warned US Secretary of State Rex Tillerson against the escalation of tensions on the Korean Peninsula by using aggressive rhetoric, including threats of a naval blockade, in a phone conversation on Wednesday.

Xinhua contributed to this story.