This, Lin Su has experienced deeply.
Various forces occupying the ancient city is actually a good thing for those without power or with weaker factions.
Although the costs are outrageously high, at least there are rules.
Take the trading area as an example.
If a trading area has no rules, there might be instances of disputes and killings, causing factions to be afraid of revealing their wealth, leading to mutual distrust and hindering trades from taking place.
With a stronger force overseeing the trading area, such chaos won't occur. While the costs are higher, it provides security for the factions.
Every Blood Moon night, the defending force coordinates the factions, who take turns guarding the city gates and fending off rule-abiding creatures, making this approach far more efficient than a disorganized effort.