YZZ 7526 was just a medium-size planet that was once a human mining colony. Its population could not compare to the commercial planets and was even considered one of the poorer planets during the time of the ancient civilization.
According to the map, there were five main cities on this planet, with small satellite towns surrounding each of them.
Those cities all shared a common trait, and that was its proximity to major mining sites.
The humans who had once lived here subsisted off mining, so their cities were naturally situated near mining sites, making it more convenient for them to commute to and fro.
The Catalyst-class destroyer had landed near one of the five main cities, coded 04. Xia Fei did not head right into the city like everyone else but chose the other main city about 2000 kilometers away, coded 02, instead; this was where he planned to begin his search in the ruins.