Reports monitored in Seoul said the Chinese delegation was led by Col. Gen. Guo Boxiong, the vice chairman of the Central Military Commission.
North Korean and Chinese media said the group was met at the airport by the vice minister of North Korea's military. There was no indication they would meet with North Korean leader Kim Jong Il or his son and appointed successor, Kim Jong-un, South Korea's Yonhap news agency reported.
China is Pyongyang's only military ally. Yonhap said analysts believe the two countries have been firming up their ties as Kim Jong-un is positioned to take over leadership of the civilian government and military.