Lin Yuan had already planned everything out.
Previously, Sun Hali had spent a massive amount of time and resources to scout out a safe passage aimed at the Other Domain.
This passage could successfully avoid detection by all the Spiritual Charm detection devices, straight to the Other Domain.
Although this route had already been traversed once by Sun Hali.
But based on Lin Yuan's speculation, and the unreasonable nature of these people from the Other Domain, they might prefer to annihilate any invading enemies rather than take a defensive stance.
Moreover, in such a short span of time, they certainly wouldn't expect someone to infiltrate their territory again, using the same path and from the same direction.
If they had already repaired this vulnerability.
Lin Yuan also had a way to deal with it, at worst, he could shed some blood, sacrifice one to temporarily suppress their Contamination Value.
