Jade articles in Han Dynasty are usually thicker in size, straighter in section and wider in edge than those in Warring States Period. Jade has a good texture, and dark green and gray-green sapphires and white jade are mostly used. The surface of the object is gray, reddish brown and green, which is related to the adsorption of foreign ions by jade, often called Qin color. Jadeite jade in Han dynasty is mainly used for etiquette and funeral, and some jadeite jade can also be used to decorate walls or as inlays to decorate copper pillows and hooks. Some smaller jadeites are used as part of Yu Pei, also known as iron jade. Jade in this period can be divided into six kinds according to its shape: one kind, the surface of jade is light plain, also known as plain jade. Second, the surface of jade is covered with various patterns, such as general pattern, valley pattern, moire pattern, tooth pattern, nail pattern, star pattern and various hollow patterns. Three-type, multi-layer decorative jadeite jade, that is, in addition to simple grain or cattail grain, there is also a layer of interwoven and evenly distributed animal face grain or Feng Niaowen, and there is a set of rope grain between the two layers of decorative patterns. Four types, that is, various hollowed-out patterns are attached to the outline of the outer edge of the two types and three types of jade walls. The contents of hollowed-out decorative patterns mainly include dragon patterns, dragon patterns and auspicious characters such as "Changle", "Wanshou" and "descendants of Changyi". Five-style double jade is made by cutting and connecting two jade walls with the same shape. Six kinds, heavy ring bi, that is, the jade bi is carved into a heavy ring with a small jade bi inside.
"Zhou Li" has records that "the son holds the ancient jade" and "the man holds the jade". Valley pattern and Pu pattern are the two most common decorative patterns on the jade wall in Han Dynasty. Rows of small breasts are carved on the wall of the valley, and the breasts are carved into a vortex shape, like the teeth of the valley, which means that the valley can keep in good health. Pubi refers to a dagger with a shallow hexagonal lattice pattern, which can be used to weave mats. During this period, the grains and cattail grass were large, neatly arranged and sparse. The production methods of grain pattern and cattail pattern are similar, which are made by dividing the jade surface into hexagonal (square) similar to honeycomb arrangement with horizontal lines or diagonal lines, and then trimming it; It is nothing more than that the former uses thin lines to make small squares, while the latter uses shallow and wide thick lines to make big squares. Compared with the Warring States period, the land of Hanbi country is shallower and less refined, and there are generally traces of plaid, and the plaid marks of Puwen often appear in glass light. These two kinds of jade are mostly from the Warring States and Han Dynasty, generally ranging from a few centimeters to a dozen centimeters, and those over 20 centimeters are rare. Judging from the remaining or unearthed objects, they are all full of jewels and well-made.
The wall is a ritual vessel to worship heaven, and it is also a symbol of status and power level. Jade jade is a kind of oblate jade with a hole in the middle. It is one of the traditional jade ritual vessels in China and one of the "Six Sites". "Erya Shi Qi" contains: "The meat (the edge) is twice as good as the hole in the middle, the meat is twice as good as it, and the meat is as good as a ring." According to the size of the central pore, this kind of flaky round jade can be divided into three types: jade bi, jade Ji and jade ring.
In the Neolithic Age, jade was used as a ritual vessel to worship heaven (there is also a view in academic circles that it is food for ghosts and gods). In the Han dynasty, jade was used for sacrifice, funeral and decoration. By the Qing dynasty, it had evolved into a variety of uses and had many decorations.
The number of jade articles in Ming Dynasty is more than that in the previous three generations. Most of them are blue and white jade, and a few are jasper. Most of the bodies are relatively small, with common relief and plain patterns, as well as many valley patterns and moire patterns. Chest nail pattern is round and large, slightly flat, often leaving traces of tubular drilling shell. Jade in the Ming Dynasty is mainly used for wearing, which has a delicate beauty.
The blue-and-white jade valley wall in Han dynasty is gray and blue, and the patina is full. The decorative patterns on both sides are the same, and the meat on the wall is decorated with neat grain patterns by relief. The lines are small and round, high and sparse, and the rhythm full of order makes people visually happy. During the Warring States period, this kind of jade was regarded as a treasure, as jade or collateral, as a gift, as an inlay, as a ritual vessel and a gift. This wall is simple, beautifully decorated, neatly arranged, very beautiful and has high collection value.