SHIJIAZHUANG, Feb. 24 (Xinhua) -- Chinese archaeologists have discovered 46 tombs, some of which date back 1,800 years, in Tangxian County, in north China's Hebei Province.

　　Thirteen of the tombs belong to the Han Dynasty (206 BC - 220 AD), two to the Eastern Jin (317-420) and the Northern Dynasties (386-581), eight to the Tang Dynasty (618-907), 15 to the Jin (1115-1234), five to the Yuan Dynasty (1271-1368) and the Ming Dynasty (1368-1644) and three to the Qing Dynasty (1644-1911).

　　The archaeologists also unearthed 276 historical artifacts, including pottery utensils, china objects, bronze basins, iron items, stone articles and bone ornaments.

　　All the tombs had underground chambers built of brick but the shape of their ceilings where unique to their dynasties.

　　The artifacts will provide valuable cues for the study of how people lived as well as funeral customs of the different eras.