Archaeological dig indicates Jinan may be 1,500 years older than thought

To date, the dig has revealed 206 structural features, including city walls, moats, platforms, and house foundations. Archaeologists have also recovered more than 460 artifacts made from pottery, porcelain, iron, copper, bone, stone, and wood, alongside over 130 coins.

"The most notable revelation is the remains of a planned settlement from the Longshan culture, characterized by well-preserved defensive walls," said Luan.

"Carbon-14 dating of these structures confirms they were built around 4,200 years ago," he added.