China's stance on seeking a nuclear-free Korean Peninsula is firm, President Xi Jinping said on Thursday.

"China resolutely safeguards the peace and stability of the Korean Peninsula and the region, opposes any party that disrupts peace and stability and adheres to resolving problems through dialogue and negotiations," Xi said while speaking with Republic of Korea (ROK) President Park Geun-hye, who is on a four-day visit to China.

Xi said China welcomes Park's proposal of a "Korean Peninsula trust process" and supports the improvement of relations between the north and south.

There have been some positive changes on the peninsula, Xi said, calling for related parties to make efforts to resume the six-party talks at an early date.

Xi said China would like to step up communication and coordination with the ROK regarding the talks.

Park said the ROK is committed to safeguarding peace and stability in northeast Asia, seeking a nuclear-free Korean Peninsula and agrees to resolve relevant issues through the six-party talks.

The ROK appreciates China's role in promoting denuclearization and safeguarding peace and stability on the peninsula, Park said, pledging to increase strategic communication and cooperation with China and create favorable conditions for the resumption of the six-party talks.

She underscored the ROK's commitment to improving ties with the DPRK on the basis of trust and laying a foundation for peace and unification on the peninsula.