The burial chamber described by Uncle Chang is the vault roof.

Generally speaking, there are two main forms of tomb roofs, one is a coupon roof similar to an arch bridge, which is based on the tops of the tomb walls on both sides and bends upwards into an arc.

The other is the dome dome mentioned by Uncle Chang, which is based on the surrounding tomb walls and built into a hemispherical shape, and this tomb style mainly existed in the Sui and Tang dynasties.

In other words, the tomb below is from the Sui and Tang dynasties.

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"This Immortal Family is a Little Fierce" Chapter 68 The heavy coffin is being hit by hand, please wait a while,

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