The eighteenth underground level of the Eternal Life Building has been mostly cleared out. Han Fei found the manager within the Eternal Life Building and, under the guise of academic research, borrowed Number Two's brain.
To ensure Number Two's brain remained active, Han Fei transported the laboratory's supporting equipment. Even with help from transport robots, they toiled until 3 a.m.
For Han Fei, taking Number Two's brain was essential. The Unspeakable could very likely attack him in reality, and he needed someone by his side for protection.
Although Number Two only had a brain left, he was genuinely an Unspeakable, merely hiding his identity and never unleashing his Ghost Creature or using his abilities.
Previously, Number Two was worried about exposure at Eternal Life Pharmaceutical. But after following Han Fei, he had no such concerns. Everyone knew each other well, all in the same boat.
