Afterglow

In 2030, during an accidental lunar exploration, astronauts discovered a mysterious sheet-like object from the moon... On the surface, it was just a rock that was almost the same as an ordinary moon rock... But after the astronaut rubbed it in his hands and scraped off the stains on the surface, a light blue square trapezoid-shaped metal piece appeared in front of his eyes. As we all know... The moon is lifeless. Things with such obvious traces of processing can only be left behind by living organisms... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.