Miao said 130 burial objects were unearthed in five Meng family tombs, including bronze work, pottery, porcelain and jade. Three of the tombs were in good condition, while the other two had been robbed around 2010.

Wang Xiaomeng, vice-president of the archaeology institute, said the discovery is of great significance in pinpointing the porcelain age.

“The discovered Yaozhou celadons have no trace of use, and the crafting date is accurate, providing important details for the study of the Northern Song Dynasty tombs and Yaozhou ceramics skills,” she said.