The Palace of Pure Heart's affiliated city was called Suxin City, and its name alone indicated that it was under the Palace of Pure Heart's jurisdiction.
Although it was managed by the Palace of Pure Heart, a large portion of the city's profits had to be given to their main sect, the Four Seas Immortal Palace, and the Palace of Pure Heart's actual annual income was around five to six hundred high-grade Spirit Stones.
Don't think this is small, for a Golden Pill level power, this was considered good and could barely sustain the Palace of Pure Heart's operation.
The main thing was that this was a fixed income, consistent regardless of good or bad crops, ensuring a steady supply of resources.
When Nangong Suyi first built this city, she spent a lot, but its existence allowed the Palace of Pure Heart to stand for hundreds of years.
