His city is a transit station.
With this city, resources can be directly sent back to the Daxia world through the will of all beings.
This is the most crucial step.
If they are merely stored in the city, Su Yang doesn't have to work this hard.
This is the most direct benefit, allowing Su Yang to directly collect an abundance of resources.
Secondly, with a city in place, he doesn't need to waste too much world source to bring his Daxia Immortal Sect disciples up here.
Without depleting world source, a small-sized city can produce one token per day.
If you consume world source, it's just 500 points of world source for one city token.
Black Horn City's token costs 1,000 points of world source, as Black Horn City earned 500 points.
Thirdly, within the city's territory, the city lord can restrict others from leaving the galaxy source area at will.