BRM1A: 70 Yugo
Length 6.5, width 2.7, inner thickness 0.2 cm
Turquoise jade, partially qined. The perforation is a two-way punch. The overall shape is square, and the blade and the aid part form a visual feeling of oblique convergence, which is created by the straight line outline with different lengths and parallels. The length of the edges above and below the edge of the edge is different, and the intersection point is lower; the upper and lower edges of the aid are two straight lines that are not parallel, and the intersection of its extension lines is also on the edge side. In this way, although the outer contours are all straight, they produce a direction of movement of a sloping arc in visual psychology. Yu Ge was unearthed in the lower abdomen of the tomb owner.
Area and Type of Prehistoric City Sites in China
Lu Keke, Chinese Historical Geography Theory Series, No. 3, 1998, pp. 9-44
This paper systematically sorts out and classifies the prehistoric city sites in China, summarizes the characteristics of prehistoric city sites in various regions, and then summarizes the principles generally followed in the site selection of Prehistoric City sites in China. Many of the material elements of Prehistoric Chinese city sites can be divided into four categories according to their functions: defensive facilities include city walls, trenches, city gates and guard houses, and natural barriers such as the use of highlands, rivers, cliffs and other grabens to achieve military defense; Living facilities include houses and other habitable buildings, public places, cellars, ash pits, wells, drainage facilities, etc.; Production facilities include pottery kilns, various handicraft workshops for the manufacture of stone, jade and bronze and fields for the inhabitants of the city in and around the site for agricultural production; Ceremonial religious facilities include large rammed earth foundations, altars, temples, tombs, ceremonial vessels, etc. At present, more than 50 prehistoric city sites have been found on the mainland, and according to their geographical location, they can be attributed to the following six regions: the central and southern regions of Inner Mongolia, the Central Plains, the Shandong region of the lower reaches of the Yellow River, the Chengdu Plain area, the middle reaches of the Yangtze River, and the Taihu Lake Basin in the lower reaches of the Yangtze River. According to the criteria of site selection, the prehistoric city sites on the mainland can be divided into four categories: slow gang, terrace, mountain city and water city. The general principles followed in the selection of prehistoric city sites on the mainland are: First, the city site must be located in a higher place such as a terrace or a gang land; Second, the location of the city must also be close to natural water sources; Third, the city must be surrounded by a certain range of plains or small basins that can be used for agricultural production; Fourth, for the sake of transportation and military defense, the city should be built on or near the banks of rivers and lakes.
The Relationship between the Ruins of the Ancient City of Chengdu Plain and the Ancient River Channel
Wang Chunwu, Chengdu Cultural Relics, No. 2, 1998, pp. 39-41
Historical documents and archaeological data show that a history of the development of the Chengdu Plain is the history of water control. This article discusses the relationship between the ruins of the ancient city of the prehistoric Chengdu Plain and the control of water.
In 1985 and 1989, at sites such as Fangchi Street in Chengdu, it was twice discovered that Dujiangyan was built with bamboo enveloping stone methods before the construction of the branch water project and the revetment project. Later, in Baodun, Mangcheng, Pixian prehistoric ancient city and other city wall sites, sand and gravel layers formed by flood impact, the remains of buildings and ditches were found. All these show that before the establishment of Dujiangyan, the Chengdu Plain had a relatively long history of ancient water conservancy.
The source of the text is "Research Outline of the Origin of Chinese Civilization", published by Cultural Relics Publishing House in December 2003
Institute of Archaeology, Chinese Academy of Social Sciences, Research Center for Ancient Civilizations, Chinese Academy of Social Sciences, ed
The pictures and illustrations are from the book "National Jade", edited by the Aurora Civilization Research Center of Peking University, and published in 2010