Sanli Mound

Sanli Mound was originally known as Zhatou Mound. According to the Xiayi County Chronicle compiled in the 24th year of the Jiajing reign of the Ming Dynasty: "Zhatou Mound lies five li southwest of the county seat." It is one of the Eighteen Mounds of Xiayi.

Since the mound is situated behind Sanli Village, local residents named it Sanli Mound. The mound stretches 170 metres from north to south and around 120 metres from east to west, rising about 4 metres above the surrounding ground. The summit was once covered with thorns, but it has all been reclaimed as farmland today. Pottery shards, bricks and tiles from different historical periods can be found everywhere across the mound, and the soil is black clay.

During cultural relic surveys, exploratory drilling confirmed the mound measures 170 metres long north-south and 120 metres wide east-west. Joint field investigations were carried out by Peking University, Zhengzhou University and the Henan Provincial Institute of Cultural Relics and Archaeology.

In the autumn of 1989, the Henan Provincial Institute of Cultural Relics and Archaeology conducted formal excavations here. The site has been designated a Provincial Key Cultural Relic Protection Unit, and was listed among the First Batch of Shangqiu Municipal Key Cultural Relic Protection Units in 2001.