No timetable has been made so far for the next round of the six-party talks, but all relevant parties are working hard on consultation and coordination, Chinese Foreign Ministry spokeswoman Zhang Qiyue said in Beijing Tuesday.

Designed to solve the Korean peninsular nuclear issue, the six-party talks have been stalled since June. The scheduled fourth round of the six-party talks failed to be held in September.

Joseph DeTrani, US special envoy for the Korean nuclear issue, is paying a working visit to China, Zhang told the regular press conference.

DeTrani exchanged views with Zhou Wenzhong, Chinese vice foreign minister, Cui Tiankai, director-general of Department of Asian Affairs of the Foreign Ministry and Ning Fukui, Chinese ambassador on the Korean Peninsula affairs, Zhang said. "Their discussion focused on the Korean nuclear issue and how to solve the issue through the process of the six-party talks."

China reiterated that the Korean nuclear issue is very complicated and can not be solved once for all, Zhang said.

The six-party talks are recognized by all parties as the only practical and effective mechanism for peace talks, Zhang said.

Zhang called on all parties concerned to continue their efforts with sincerity and flexibility so as to resume the six-party talks as soon as possible.

China has spared no efforts and will continue to make the next round of the talks possible, Zhang said.

China hope keeping the six-party talks process, so as to solve the Korean peninsular nuclear issue peacefully through dialogues, which is in line with the interests of all parties, Zhang said.

The six-party talks involve the Democratic People's Republic of Korea, the Republic of Korea, Japan, China, Russia and the United States.