Is it blue and white? What time is it now?

Look at the shape: 1. The shapes of blue-and-white porcelain in the Tang Dynasty mainly include bowls, plates, porcelain pillows, jars and three-legged jars. Among them, bowls and plates are the most. Bowls are divided into two forms: jade wide-circle feet and jade narrow-circle feet. According to the shape of the mouth and abdomen, it can be divided into four types: open abdomen and deep abdomen; The abdomen is open and shallow; Folding, shallow abdomen; Flower mouth, hem, shallow abdomen, etc. 2. The shape of blue and white porcelain in Song Dynasty is still dominated by bowls, which are divided into three types: straight mouth, round lips and micro-arc on abdominal wall; The outer lip is curled, the lip surface is inclined outward, and the abdominal wall is slightly curved; The mouth is straight and the lips are flat, the upper part of the abdominal wall is nearly straight, and the lower part converges inward. 3. The modeling of blue-and-white porcelain in Yuan Dynasty has both inheritance and innovation. Its outstanding features are huge appearance, thick tire and heavy weight. In terms of modeling, there are plum bottles, jade pot spring bottles, big pots, bowls and plates. Plum bottles were created in the Song Dynasty, and Yuan blue-and-white plum bottles were improved on the basis of being slender and straight in the Song Dynasty. If the corners of the mouth rise and the lips and shoulders widen, it looks plump and steady. In addition to the round shape, there are octagonal plum bottles. Compared with the Song Dynasty, the shape of the jade pot spring bottle has not changed much, and it has been handed down from generation to generation as an octagon. Pot is one of the most common shapes in Yuan blue-and-white porcelain. There are many shapes, such as straight-mouth jar, convergent jar, gargle jar, straight-mouth square-lip double-paved first jar, etc. There are also many forms of can covers, such as lotus leaf shape, fire bead buckle, lion buckle and so on. The market is often used for export, which is most suitable for the needs of pilaf customs in Islamic countries. The shapes of utensils are mostly open, folded and shallow, and can also be divided into round and diamond mouths. The inside of the circle foot is mostly sand bottom and flint red. 4. The blue-and-white porcelain in Ming Dynasty is light and beautiful, simple and elegant, with soft and round lines and a simple and solemn aesthetic feeling. 5. The blue and white porcelain in the early Qing Dynasty was Gu Zhuo, which was plump and honest; Exquisite, beautiful and correct in the middle period; The later period is dull, childish and heavy. Shunzhi blue and white porcelain has a thick tire, white tire color, uneven glaze thickness and common glaze shrinkage. The glaze is slightly blue, and the mouth is decorated with a circle of sauce glaze, which is simple in shape. Although the official kiln of Shunzhi once fired blue and white "railing board" and "big dragon jar", they were all unsuccessful. Folk kilns are mainly daily utensils, and sacrificial utensils such as incense burners, candlesticks, water purification bowls, water purification bottles and flower beds are also common.