What shape is Jianzhan?

What are the shapes of architectural lanterns? There are four categories: bunching, folding, skimming and opening.

Jianzhan refers to the black glazed tea bowl fired in the kiln, that is, the black glazed lamp built in the kiln.

Jianzhang, a specialty in Jianyang District, Nanping City, Fujian Province, is a symbolic product of chinese national geography. Jianzhan, from Jian Yao, is known as "the pearl of porcelain altar" and is the peak of black glazed porcelain in Song Dynasty.

Its basic shape is open feet and inclined straight walls. The regular model is smaller than the bowl for eating and larger than the wine glass. The glaze color is unique, which can produce different glaze colors in the firing process. The finished products have natural markings, such as rabbit hair, oil drops, obsidian, tea powder, persimmon red glaze and so on.

Because the high temperature in the kiln can reach 1350 degrees Celsius during the firing process, iron ions in the glaze will precipitate and flow on the glaze, forming a unique and wonderful pattern, the so-called "rabbit hair" pattern, which is why Jianzhan is better called rabbit hair.

Most lanterns have big mouths and small bottoms, and some are shaped like funnels; Most of them are round feet and shallow round feet, and the foot roots often have trimming knives, commonly known as chamfering, and the plantar surface is slightly inclined; A few are solid, mainly small round bowls. The shape is simple and vigorous, and the feel is generally heavy.

Station construction is divided into four categories: open, left, closed and tied, and each category is divided into large, medium and small; Small round bowls are classified as small convergent bowls. Open the bowl: the mouth is curled outward, the lips are pointed, the abdominal wall is oblique or slightly curved, the abdomen is shallow, and the abdomen is adducted. Shallow round feet. Shaped like a funnel, commonly known as "hat bowl"

Characteristics of building lamps and lanterns

Kiln black glaze is a kind of crystalline glaze, which belongs to lime glaze with high iron content. Therefore, it has the basic conditions for firing black glaze, and at the same time, lime glaze has strong viscosity, and its biggest feature is that it is easy to flow at high temperature.

Therefore, there is often glaze hanging at the bottom of the outer wall of building lamps, while the mouth of utensils is thin along the glaze layer, reddish brown, and some are similar to awn mouth. The basic characteristics of the fetal quality of Jian Yao black porcelain are black or grayish black, black and brown, which is caused by high iron content.

Fetal bones are thick and hard, and there is a metallic sound when knocking, commonly known as iron fetus, which feels heavy. There are more sand grains, so the tire quality is rough and the exposed tire feels rough. From the analysis of firing process, Jian Yao black porcelain is fired at high temperature, and the tire soil is too fine, so the porcelain is easily deformed. It is precisely because the matrix of Jian Yao black porcelain sword lamp is thick and contains tiny pores, which is beneficial to the heat preservation of tea soup and suitable for the demand of tea fighting.