The Kingdom of Koguryo was once a powerful force in northeast China; its remains are well worth visiting.

The first movement of Chinese Koreans from the Korean Peninsula to China began in the final years of the Ming Dynasty.

The Mongol tribes first roamed the Wangjian River during the Tang Dynasty (618AD - 907AD).

AP - China's secretive communist government said Tuesday it has approved rules boosting official transparency but added that state secrets have to be safeguarded and social stability preserved.