Although the unexpected opportunity involving the True Dragon that Black Dragon obtained was a pleasant surprise, they had just captured Panlong Lake, which was only the beginning, and it's far from the moment for them to relax and celebrate.
If the news of Panlong Lake changing hands spreads, let alone what the forces of the Yellow Court Immortal Alliance would think, even the demon clans of the Hundred River Immortal Domain's water vein might explode with fury.
It is very likely that they won't let it go easily.
Even if the demon clans of Panlong Lake don't request their intervention, they are still very likely to target Panlong Lake, thinking about taking it back.
After all, the demon clans of the Hundred River Immortal Domain's water vein are inherently weak.
Only by relying on each other and joining forces can they barely maintain a foothold within the Hundred River Immortal Domain's water vein.