One of the largest tombs, labeled Mound No 1, features a three-tiered earthen platform reinforced with stone retaining walls. The mound is clearly divided into burial and sacrificial areas.

Over 600 ritual objects, primarily made of jade, pottery, stone, bone, and shell, have been recovered.

"This discovery lengthens the duration of the Hongshan culture and greatly expands its known sphere of activity," Gong said, adding that it clearly shows a southwestward expansion from the area that is now Northeast China.

The site was one of the major points of discussion at the recent 2025 Hebei Archaeological Achievements Exchange Conference in Shijiazhuang. It was selected as one of the six most important archaeological discoveries in Hebei for 2025.