Don't Let Me Stay Up All Night

As everyone knows, there is a power in the southern region that absolutely cannot be provoked—the Grass Hall. 
The eldest disciple is the Sword Saint of the southern region, with a godly understanding of swords. 
The second disciple is the Eternal Empress, who ruled an era. 
The third disciple is a great scholar of the current generation, the reincarnation of the immortal of literature. 
The fourth disciple is the reincarnation of a demon god, suppressing the Nine Hells. 
Lu Changsheng: Me? I'm nothing special, just their master.

I See the Aura of the Great Emperor in All My Disciples

One would know that this old man was killed by a mysterious invader when he was alive and was then suppressed here from their previous conversation.

Then, there was a question. Why did the old man's soul have to be suppressed after killing him?

Usually, the reason why they were suppressed was because this person was too strong and could not be completely killed. Therefore, they could only suppress him.

Perhaps the so-called "intruder" was not strong enough and could only suppress the old man.

If it was just this, it could only make Ye Qiubai a little puzzled and not be sure of anything.

However, Ye Qiubai was certain that when the old man took out the soul mark regarding the Sword Dao inheritance, that this old man was hiding something.

Otherwise, why would a soul that lived in this city and was suppressed could not leave this city knowing that there would be a Sword Dao inheritance in the outside world?

Fangs!