It's said to be an obsession, but in reality, it's a person.
Before his mentor left, he left him with a message that if, one day, he really reached a certain level, he could pass through the "Wood of Time" he left behind.
Cross a place known as the "River of Time," and he might be able to follow him. If he met a man on the River of Time, remember to show respect.
That man is the ancestor of the entire Dark Inference Demon Realm.
Without that ancestor, the entire Dark Inference Demon Realm would cease to exist, and so would he.
In truth, the person he seeks is not his mentor, but that ancestor.
However, later on, when he reached a certain level of power and was ready to use the Wood of Time to cross the River of Time, he hesitated.
As for why he hesitated, he doesn't want to say just yet.
Seeing Su Ming remain silent, Wu Zhong didn't pursue the topic further.
Instead, he got straight to the point, seriously saying, "Would you be willing to accept me as your master..."
