They were inextricably linked to those mining drones he discovered still operating to this day.
Those mining drones have mined resources for countless years; there is an absolute reason and time to fill up all these warehouses.
The metal resources piled up in these warehouses might be all the exposed mineral resources extracted from this Star System and neighboring Star Systems over the years.
Moreover, this mining process continues even now.
Of course, the real situation might be, as Chen Ming speculates, a combination of both.
The reason he makes this speculation.
Is because when moving closer to the interior of these warehouse complexes.
Chen Ming discovered some of the warehouses still maintained relatively intact conditions.
Just like one warehouse that triggered an alarm after Chen Ming opened it; it's one of the fairly well-preserved warehouses.
Some of the preserved warehouses even have doors that do not appear to be relics from ancient times.
