What is the structure of the tomb door of the imperial tomb?

The structure of the tomb doors of imperial tombs in different dynasties is different. The specific analysis is as follows:

1. The tombs of Shang kings and nobles at all levels all used wood to build coffins. .The coffin chamber of a sub-shaped tomb is sub-shaped or square in plan.

2. The coffin system of the Zhou Dynasty had strict levels, which is the so-called "seven-level coffin for the emperor, five-level coffins for princes, three-level coffins for officials, and three-level coffins for scholars." "Heavy". Archaeological excavations have shown that some large and medium-sized tombs have double coffins built into the coffins. It can be seen that the records are generally credible.

3. The Western Zhou Dynasty already had a joint burial system, and the system was for husband and wife. They were buried in two grave pits close to each other, which is the so-called "joint burial in different caves".

4. In the late Spring and Autumn Period and the Warring States Period, many tombs of the ruling class had mounds and tombs built on the ground. Mounds are generally made of rammed earth, some are in the shape of square cones, some have unclear shapes, and the tallest existing one is more than ten meters long.

5. In the Qin and Han Dynasties, horizontal caves were commonly used as tombs. The tomb was built with bricks and stones, imitating the shape of houses in real life.