Chen Chen did not know about the door that was found on Mars in the dimension of Doom.
After getting everything he wanted, he thought of leaving.
After all, every time something entered or exited the portal opened by the USB drive, it consumed energy. After a month of going in and out, the energy in the USB drive was also nearly exhausted.
Thus, after withdrawing all the Black Knights, he decisively closed the USB drive.
He originally had another idea and that was to bring researchers from the other world over to work for himself.
Still, after thinking about it, he finally dispelled the unreliable idea.
After all, after bringing them over, the secret of the USB flash drive would be revealed. Unless this group of researchers stayed out of contact with the outside world for the rest of their lives, sooner or later they would know the truth — that they were not in an alien world, but another human civilization.
