According to the previous records of people entering the quadrupole, the inner passage may be in a small cave, but it may also be in the dimensional void, so there must be some docking places nearby.
In this session of the Quadrupole Trial, the access to the inner layer is in the dimensional void in the middle of three thousand spaces, which is a huge circle of whirlpool. The space is very chaotic, cutting the void. The elements are crisscrossed and dangerous for many times, and ordinary people cannot enter at all.
As time went on, the vortex became deeper and deeper, and began to stabilize, but it still took some time, as if it had not really opened.
In all directions parallel to the vortex, there are twelve platforms