Ancient jade pure as jade cong to a very long timeSize 7.9 cm high 5.0 cm wide weighs 354 gThis collection is so old that based on natural ancient jade, jade solid, colour and lustre jade-like stone embellish, fraction outer wall contact green, gray markings around them, an ancient meaning.Jade cong shape of primitive simplicity, inside outside round square, cong neat cutting body, in the hole for the drill pipe to wear.Using the wire drawing, pipe drilling, sawing and other medium cutting mainly by means of sand, the quartet bas-relief technique outer wall decreases, full of Yin line score, fine table burnish, were the height of the liangzhu jade achievement, unique decorative pattern is not only give a person the aesthetic feeling of mystery, the more we study will provide an important basis for cultural and religious.