If an Undead Lord on the level of the Heavy-Armored Zombie Lord discovered his Corpse Tomb, Fang Zhou wouldn't have much to fear. With the strength he now possessed, he should have no problem sweeping through this corner of the world as long as he was careful.
However, the concentration of Death Energy in the Wasteland of Strife far exceeded that of the Corpse Hills. There were surely undead more advanced than Zombies present. If he were to be attacked today by a Ghost Lord or a Vampire Lord, whose entire command consisted of Ghosts or Vampires, Fang Zhou wouldn't even need to fight. He might as well just turn tail and run.
This forced Fang Zhou to be extremely cautious. If these high-level undead discovered his tomb, the consequences would be disastrous.
Therefore, to avoid potential attacks from these high-level undead, Fang Zhou had to make some preparations.
