ULAN BATOR, Aug. 16 (Xinhua) -- A joint China-Mongolia scientific taskforce has recently completed a study of ancient rock carvings found in Delgerkhangai soum of Mongolia's central Dundgobi province.
The task was jointly done by China's Inner Mongolia University and the Mongolian Chinggis Khan University, with a main purpose of studying the rock inscriptions and drawings allegedly belonging to China's Eastern Han Empire.
Dating back to about 2000 years ago, the ancient rock art was written with more than 250 Chinese characters, and was a sign of victory over the northern Hunnu Empire.
The Hunnu was a nomadic tribe living in what is now Mongolia in the fourth century BC. It warred with the East Han government from time to time.
The rock carvings also coincide with the events recorded in the reference books of the Eastern Han Empire.
Close to the site, there are 11 ancient graves belonging to the Hunnu Empire, noted J.Chimeddorj, deputy director of Inner Mongolia University.
Earlier, professors with Mongolian Chinggis Khan University found inscriptions alongside rock paintings qualified as a type of letter from the Eastern Han Empire. The discovery led to additional research by linguists from China's Autonomous region of Inner Mongolia.