Two archaeologists clean a bronze vessel unearthed from the excavation site of royal tombs of the Western Han Dynasty (206 BC-AD 24) in Nanchang, Jiangxi province. [Photo by Guo Jing/China Daily]

An ancient state in Nanchang, the capital of Jiangxi province, has recently begun to reveal its full face.

After a five-year archaeological project involving China's top research institutions, experts are also learning more about Marquis Haihun, a dethroned monarch of the Western Han Dynasty (206 BC-AD 24).

Mention of the emperor is found in Book of Han compiled in the first century AD, and more details have started to emerge as archaeologists investigate the main coffin found in a tomb.