The tombs date from various dynasties and were discovered during construction works for the Sichuan Xinchuan Innovation and Technology Park.
Excavations began in 2015, but the results of the ongoing discoveries have finally been announced by the Chengdu Institute of Cultural Relics and Archaeology.
The tombs range from the Warring States Period (475 BC), the Qin Dynasty (221–207 BC), the Han Dynasty (202 BC – AD 220), the Five Dynasties and Ten Kingdoms period (AD 907–979), the Ming Dynasty (AD 1368–1644) and the Qing Dynasty (AD 1636–1912).
Most of the tombs are carved into a small cliff face as rock pit tombs or constructed from brick and have contained tens of thousands of pieces of pottery, porcelain, copper, iron, glass, coins and stone artefacts. The team have also discovered cultural relics such as a gilt-bronze knife, Buddha statues, painted figurines and painted miniature pottery houses.