Chen Yang stayed in the subway station for several more hours, until 5 p.m., when he took all the gathered clues and items and returned to the basement the same way he came.
Once back in the basement, without taking the time to eat and rest, Chen Yang began working on other matters.
Firstly, he built a temporary isolation room on the other side of the photonic film for changing clothes and disinfecting each time he came in and out. Just in case, Chen Yang installed two high-energy pulsed lasers about thirty meters away from the photonic film in the tunnel. Surveillance cameras were also appropriately paired for 24-hour surveillance by XEON.
If any unidentified creature invaded, it would immediately alert Chen Yang and activate the laser to eliminate the intruder.
This was the key to safety, the utmost necessity!
