"We're only focusing on laying them around Rose Palace and the Stranger Astral Lighthouse, but due to limited production capacity and materials, we might still need to…" Nizemar said as she walked.
Since Valk could uproot the Viper Astral Lighthouse and expose the Moon Realm rift, William had to assume that the Stranger Lighthouse in Thorn City could be uprooted. As long as there was a possibility of a Moon Realm rift opening in Thorn City, he couldn't abandon everything here and go to Ava State to look for Remides.
After all, the Void Sovereigns were already targeting him. He suspected that the Lady of Starvation could accurately locate him in Currere through the wound that constantly spread with the corruptive curse.