How to seal and open ancient jars?

In ancient times, after wine was bottled, the sealing mud was put into the bottle cap, and the mouth of the bottle cap was rolled into a tube with a brown sheet. The sealing mud passes through the brown tube and presses down hard to cover the lid, so that the sealing mud will pass through the bottle mouth and stick to the inside of the bottle mouth without falling into the wine.

The sealing mud has a certain tension (just like when a person pulls a stool-the stool won't break immediately), and it will dry hard after a while, because the mud inside the bottle mouth and the mud outside the bottle mouth are connected together, and the sealing mud at the neck of the plum bottle can't break the head of the plum bottle, so pull out the lid. It is impossible to open the bottle if you want to keep the bottle cap intact.

In addition, the extruded sealing mud sticks to the bottom of the plum bottle mouth, even if the lid and sealing mud are not stuck, the brown chip tube and sealing mud are fixed in length and cannot rotate.

Mud adheres to the bottle cap just as cement adheres to the bottle cap and bottle mouth.

Therefore, plum bottles filled with wine can't be opened without damage, and there are almost no well-preserved plum bottles.