Does the interior of the earth really exist?

According to the form of seismic wave, there is a hot iron core inside the earth, and the temperature of the core is very high enough to reach the melting point of iron, but because the pressure here is also high enough, the ultra-high pressure makes iron exist here in the form of high-temperature solid.

Outside the iron core, there is a mantle layer, which can receive a large amount of high temperature from the core, making the materials here exist in a molten state and reach the surface through the weak crust from time to time. This is volcanic eruption.

Outside the mantle layer is a rock layer with low temperature and many rocks.

Outside the rock layer is the earth's crust, which is our daily contact, and life activities are mainly carried out in the earth's crust. The reason why geocentric people can't exist inside the earth is because the earth is not only a solid entity, but also the temperature here is extremely high. Even the temperature of the mantle layer has reached an astonishing 65438 0℃.

We know that any substance has a melting point, and the high temperature of 1℃ is enough to destroy all substances. In this ultra-high temperature, no life can survive here, so there is no civilization inside the earth.