The status of citizenship seems to have no use on the surface, but in reality, it is not the case.
Any city has a prosperous, bright side, and naturally it also has a dark side; Mountain City is no exception.
First Level Citizens are just slightly better than the ordinary vagrants; they basically only exist in slums, with only a few lucky ones able to live in prosperous, safe urban areas.
Second Level Citizens have better treatment than First Level Citizens; they can find slightly more decent jobs and possess the basic qualifications for civil service exams.
Yes, this world also has civil servants; both the Political Affairs Department and the Ten Temples Department need common people to fill their roles, as they wouldn't want to do any dirty or tiring work themselves.
