The most important thing for the ongoing six-party talks is to achieve concrete progress in denuclearization in the Korean Peninsula, said Kim Kye-gwan, head of the delegation of the Democratic People's Republic of Korea (DPRK), in Beijing Tuesday.

Reopening the talks is very important, but it is more important to achieve concrete progress during the talks, said Kim, also DPRK's vice foreign minister, at the opening ceremony of the fourth round of the six-party talks.

It needs political will and strategic resolution of all the parties concerned to wipe out all the threats of a nuclear war on the Korean Peninsula and to realize a nuclear-weapon-free Korean Peninsula, he said.

"The DPRK delegation promises that it has got ready for that," said Kim, adding that he believed that the US and other delegations had also been ready for the goal.

If all the participants could take an attitude of cooperation and understanding, the goal of denuclearization would be realized, he said.

He promised the DPRK side would work together with the other five parties to prevent the meeting from becoming one without any concrete progress.