The architectural remains found at the Sanxingdui site in 1980 are probably the "oldest" houses. In November 1980, the Sichuan Provincial Cultural Management Committee, the Sichuan Provincial Museum and the Guanghan County Cultural Center formed a joint excavation team to excavate on the east side of the Sanxingdui site, with an excavation area of 1,100 square meters, and the work was completed in May of the following year, and a total of 18 houses were found. These sites are available in square, rectangular and circular shapes. According to the calculation of the post holes and trenches, the area of the house is generally between 10-25 square meters, and most of the doors are opened on one side, and the doors are facing different directions, and a few rooms have partition walls. The living surface is built on the raw soil layer, which is relatively solid, and may have been trampled or beaten, and a few living surfaces have a layer of white plaster.
The excavators believe that there is a superimposed and broken relationship between these 18 houses, which should belong to different periods of architecture, among which the early site plan is circular or square, and the late site plane is rectangular, the surrounding wall base digs a trench, the trench is neutral with wooden columns, and then the wooden (bamboo) sticks (strips) are arranged, and finally the grass is mixed with mud to form a wooden bone mud wall, the wall seems to be barbecued by fire, the house frame is speculated to be a bamboo and wooden structure, and the roof is covered with grass. This type of building is very similar to the thatched-roof houses that have continued to exist in the western Sichuan Plain until modern times.
Archaeologists have carried out carbon 14 dating of charcoal specimens collected in the stratum where the remains are located, and their age is 4075 100 years ago, which is corrected by tree rings to 4500 150 years ago, which has a coexistence relationship with the first phase of the cultural relics of the Sanxingdui site at this site, and it can be confirmed that this is the most "old" house found in Sanxingdui so far. In the new era, Liaoning is a bargain