'Should I kill him or not?' thought Huo Fenghuang
Fighting between Eternals usually involved specific nuances due to how difficult it is to kill each other. So, after "killing" the Cult Leader, she needs to decide whether it's worth the trouble of granting him true death. She must find his Dao Imprint, erase his history, and track down his Secret Vault.
Huo Fenghuang must consider whether her relationship has reached the point of making all the effort. The Cult Leader will take countless Yuan Epochs before reviving, and Heaven knows how powerful she will be by then.
According to the rules of Heaven and Earth, once an Eternal dies in the lower dimension, their revival point will be in the upper dimension. As such, she does not need to worry about his revenge on the Ancient Clan once he returns.
