It's time to deal with the Undead Overlord.
Previously for Zhou Tian, the Undead Overlord was no less than a nightmare. For a mysterious reason, Zhou Tian had a deadly feud with him. Given their power difference at the time, in reality, the Undead Overlord could easily kill Zhou Tian if he truly wanted to.
Unfortunately for him, due to the protection of the Blood Moon Lord and the fact that the Undead Overlord himself did not take it too seriously, Zhou Tian managed to survive until now.
Now, the Undead Overlord probably never expected that, even though he just started getting wary, Zhou Tian's strength has rapidly surpassed him! Considering their relationship, it's not surprising that Zhou Tian couldn't help but strike against the Undead Overlord at this time.
Zhou Tian has many enemies, but most of them are no threat to him. There are only three parties he truly needs to be cautious of.