The North's Korean Central News Agency said North Korea expressed its willingness to take part in future six-party talks if they "provide a process of putting into practice the proposal for a package solution based on the principle of simultaneous actions."
China's Xinhua News Agency said the Chinese side underscored the need to simultaneously resolve concerns of the United States and North Korea.
Xinhua also reported that during talks earlier Thursday with North Korean Prime Minister Pak Pong Ju, Wu said Beijing would "ceaselessly" help the North develop its economy and explore new means of economic cooperation between the two countries.
Wu, ranked second in the Chinese Communist Party's hierarchy after President Hu Jintao, was on the second day of a four-day goodwill visit to North Korea.
Notable deaths of 2014 [PHOTOS]