"No need," Qing Wan shook his head, "they won't intervene in this matter, nor can they. Moreover, they will need to clean up Prison 18 afterward. Let's leave it to the professionals."
Qing Wan was very aware that the Contraindicated courts targeted only dying Transcendents, Taboo items, and Taboo Lands. The sudden arrival of these people was probably because they anticipated a large number of Transcendent deaths in Prison 18.
If the flesh and blood of Transcendents nourished this land, then in a few decades, City 18 would become the third largest Taboo Land in the Federation.
The Taboo Land formed by the death of just one Demigod, Uncle Li Dong, was frightening enough.
There had been precedents before where cities fell and became Taboo Lands.
The Federation had a total of 25 cities, each gathering a vast number of residents, with every city having a population in the tens of millions.
The destruction of a city was a cost the Federation couldn't afford.