With a thought, Fan Lang used the Main System to control the subsystem and completely retrieve it.
The vacated subsystem slot opened up again, ready for the next target.
As for the test subject, his entire body was nearly drained, somewhat affected by the subsystem's entry and exit, but his life was not in danger.
That was enough.
Fan Lang knew full well that subsystems were too valuable to be distributed to mortals. Most would have to go to figures at the level of Martial Gods, so they could be put to their fullest use.
"Forget everything that just happened. Treat it as a dream."
Fan Lang pointed at the test subject, who immediately forgot everything he should not remember. Fan Lang then gave him some compensation, along with medicinal pills to replenish his body. He did not mistreat him.
Being Fan Lang's guinea pig was actually a rare opportunity. Others would not even get the chance if they wanted it.
Having finished experimenting on a mortal, it was time to change test subjects.
Fan Lang brought in a Lower God guinea pig. He experimented on him, first telling him not to resist and allowing the subsystem to invade. The entire process went smoothly, but it took longer than implanting it into a mortal.
After the implantation was complete, he forcibly retrieved the other man's subsystem. Like unwinding silk from a cocoon, it made him suffer a little, and the flesh and blood of his divine body were thoroughly scoured.
Fan Lang had the test subject swallow medicinal pills and recover to peak condition before forcibly implanting the system a second time.
Unlike before, Fan Lang had him resist the subsystem's implantation with all his strength and try to keep that force outside.
The test subject did as instructed, using