The Lushanmao site of the Neolithic Age in Yan'an City, Shaanxi Province

The Lushamnao site is a large-scale settlement site from the late Miaodigou Phase II culture to the late Longshan age located in Yan'an City, Shaanxi Province. The core zone of the settlement is on a hill ridge, on the top of which four large-sized rammed-earth platform foundations are distributed, each of which had large-sized rammed earth architecture sites on top. On the top of the excavated Da Yingpan Liang (Large Garrison Ridge), one large courtyard and two smaller courtyards were distributed. Of them, the large courtyard was facing south, which would be the earliest palace complex in an axial symmetrical plan known to date in China, and the two smaller ones would be its guardhouses. In the large courtyard, a set of roof tiles, which would be the earliest ones known to date in China, were unearthed; and jades were also found in the rammed-earth foundation or walls. These discoveries are significantly valuable for the studies on the early capital city planning, origins, and evolutions of palaces and the developments of the early ritual systems and architectural materials of China.