After the war broke out, they would certainly prioritize attacking important areas, such as the Spirit Medicine Garden, Talisman Hall, and many other buildings and regions that could influence the battle.
Otherwise, why would they lead a large force to attack a valueless wilderness? What would the enemy be after—to fish for opportunities?
Therefore, Gu Shanhai's location might encounter small groups of enemy sects, but it was unlikely to be a major target.
Yun Yu, the Sect Leader, seemed to be preparing for war as well, thus in his recent responses to letters, he hinted in his tone, essentially saying, "Since you've mastered the 'Great Heavenly Immortal Technique,' hurry back."
If one were to speak of safe places, it would certainly be Chengyun Sect. As long as Chengyun Sect wasn't destroyed, Gu Shanhai wouldn't face any danger.
If Chengyun Sect was destroyed, then wherever he hid, as a remnant of Chengyun Sect, he would face the same treatment.
