Principal Cai's Reward and Punishment

Moon's Ecological Defense Center.

This was the first eco-defense system that humans on the Blue Star used against outsiders. This was also a lesson that the Blue Star had learned after experiencing several ecological disasters decades ago.

This was also the most fundamental reason why the Moon was used as an extraterrestrial base. It was also the strategic position of the Moon. Whether it was war or other ecological disasters, the Moon was the barrier and buffer zone of the Blue Star.

After decades of dealing with several disasters and crises, the technological content and system of the Moon's ecological defense center were no longer complete. This was especially so for those who had returned from outside Mars. They had to go through a complete testing and sanitation procedure. No one could violate it.