China's point man on North Korea has arrived in Pyongyang, the country's capital.

The visit of Wu Dawei, China's special representative for Korean Peninsula affairs, comes amid a flurry of diplomacy following North Korea's fourth nuclear test on Jan. 6. North Korea says it successfully tested its first H-bomb.

Pak Song Il, deputy director of the America department at the North Korean Foreign Ministry, greeted Wu in the VIP area of Pyongyang's airport.

North Korean authorities have not confirmed any details about Wu's visit, including how long he will be in Pyongyang or who he will meet.