这件红山文化玉龙胎，器形简朴古拙的红玉龙胎体型较大高19厘米 宽12厘米，厚6厘米并刻有四个史前铭文。就磨制工艺而言，在研究实物磨工的同时，查阅大量考古史料，从比较分析中看出，是原始治玉加工方式。方法是：红山祖先玉工先根据玉石料纹理劈成玉块-片，把构思设计好的龙胎画到玉面上，然后研磨，有的用手，有的用原始砣具。大面积的横磨，竖磨，旋磨等等，尤其是这个龙胎，背上的穿挂绳用的对打小孔，均是'象鼻穿'。'臣'字形胎龙卷曲体中央的圆孔和龙嘴均采用手工旋磨的方法，使卷体呈扁圆和圆柱形，磨制错落不一的痕迹，清晰可见，足以说明是原始手工磨制的精品古红玉胎龙。由其是器身上的铭文将人类文字使用期推前了上千年。 Characteristics of jade dragon This jade dragon embryo of Hongshan culture, the shape of simple and primitive red jade dragon embryo is larger and 19 cm high It is 12 cm wide and 6 cm thick and has four preamble inscriptions. As far as the grinding process is concerned, while studying the physical grinder, consulting a large number of archaeological historical materials, from the comparative analysis, it is the original jade processing method. The method is: Hongshan ancestors jade workers first according to the texture of jade blocks - pieces of jade, the idea of the design of the dragon embryo painted on the jade surface, and then ground, some with the hand, some with the original lead. The large area of horizontal grinding, vertical grinding, rotary grinding, etc., especially the dragon's tire, the pair of holes used to wear the lanyard on the back, are 'elephant trunk piercing'. The circular hole in the center of the 'Chen' shaped fetal twister and the dragon's mouth are hand-grinding methods, so that the roll is oblate and cylindrical, and the traces of the grinding are scattered and clearly visible, enough to show that it is the original hand-grinding fine ancient ruby fetal dragon. The inscriptions on its body pushed back the use of human writing by thousands of years.