One, two, three, that is, one inch at the bottom, two inches at the ceiling and three inches thick.
Two, three, four, that is, two inches at the bottom, three inches at the top and four inches at the ceiling.
Three four five, that is, the bottom three gangs have four days and five inches, commonly known as three five boards.
Four-five-six, that is, the bottom four gangs are five days and six inches, also called four-six boards.
Coffin title:
The coffin, also known as the old house, is specially designed for the dead, and its workmanship is very fine. First look at its material. Usually due to the limitation of economic conditions, popular coffins are made of pine and cypress. A good and exquisite coffin is made of precious nanmu or natural crystal stone.
And its shape is also very strange, with a big front end and a small back end, which is stepped. On its body, the inclined plane of each board used is opposite, and all parts after molding should also reflect the inclined plane of big front and small back. The so-called coffin material is also called inclined cargo material, but both sides and lid are inclined with radians. From the front of the material head, the whole coffin looks like a semicircle.
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