Under the traction state.
Han Dong's consciousness was enveloped in a mass of grey fluid, drifting toward an unknown domain.
During this time, his consciousness was in a semi-comatose state, unable to perform any actions, and even his perception of the flow of time was not entirely accurate.
When his consciousness gradually cleared.
Han Dong found himself drifting deeper into the universe along with the grey fluid.
There, a peculiar neutron star floated alone in the void.
Upon closer inspection, the entire neutron star had been modified into a gravity prison (now abandoned).
Guided by the traction of the grey fluid, Han Dong's consciousness entered the neutron star's interior, bypassing layer upon layer of prison structures. The deeper he went, the stronger the gravitational pressures exerted by the prison.
In the deepest depths, he vaguely caught sight of something resembling a miniature black hole structure.