A top Chinese Communist Party official was in the North Korean capital Sunday seeking a change of heart after Pyongyang reportedly rejected any further negotiations over its nuclear weapons program. The head of the party's international department, Wang Jiarui, "exchanged views ... on international and regional issues" with North Korea's No. 2 leader Kim Yong Nam, Chinese state media reported without elaborating. China is trying to draw North Korea back to six-nation talks on its nuclear program _ a task that has taken on greater urgency since Pyongyang's explosive but unconfirmed declaration earlier this month that it has become a nuclear power. Wang, who arrived in Pyongyang Saturday for a four-day visit, also planned to meet with North Korean leader Kim Jong Il, according to South Korea's Munhwa Ilbo newspaper. China's Foreign Ministry said Sunday it had no immediate comment on Wang's trip.