Yin Wang and Wuxian are not afraid of Han Yu's harsh conditions, but rather are most afraid that Han Yu would agree without a second thought.
This would instead seem too frivolous.
As for the condition of not stepping into the Central Continent, it was indeed quite harsh, but Wuxian agreed.
Firstly, the Endless Sea Domain is vast enough, even if they don't enter the Central Continent, with their world-spanning powers, creating a suitable environment for habitation is not difficult.
Back then, those people overseas lived well away from the Central Continent, so thinking differently, not entering the Central Continent is not a big deal.
"Alright, once you win, the Endless Sea Domain will be ours, and we will not set foot in the Central Continent in this lifetime."
Thus, both parties reached a preliminary consensus, and now it was only a matter of how Han Yu wanted to cooperate.
