Archaeologists in east China's Jiangsu Province have unearthed about 200,000 ancient coins in a well on a construction site in the city of Suzhou.
The coins, weighing around 4 tonnes, were believed to be from the Northern Song Dynasty (960-1126), the city's archaeological institute said in a press release.
Construction workers found the well and coins first on Wednesday. Archaeologists rushed to the site and spent one day digging out coins in a protective manner.
Archaeologists assumed that the large amount of coins might be hidden by some rich family during war in relatively-prosperous Suzhou. The exact source has yet to be confirmed.