The confidence brought about by the ability of immortality is no longer as strong as it once was.
To put it bluntly, the combat strength of the Four Great Corpse Kings, excluding their nearly indestructible defense, is not the most formidable among the Three Realms and Six Paths.
The reason the Four Great Corpse Kings are so troublesome is due to their innate special abilities:
Either they carry extreme cold, or extreme heat that is hard to resist, and their special Invincible Shield, which during a duel is almost impossible to break. Even if it is broken, it can recover in a short time to achieve a truly invincible effect.
Their combat power is not weak, and in battle, almost no one notices the special mechanism of their shield, leading people to mistakenly believe that the defense of the Four Great Corpse Kings has truly reached an invincible level.
In the battle with Hekong, the defense of the Four Great Corpse Kings was broken.
