Unveiling the truth that the little boy submitted to Tiangong, dealing with him became a problem.
Killing him would be a pity, as the little boy was a member of the Du Gu clan and had awakened his Bloodline Power. Furthermore, Ye Qiu couldn't bring himself to do it.
But if they don't kill him and take him away, would it expose their location to Tiangong? If Tiangong locates them through the boy's clues, they would lead Tiangong's people here, endangering the surviving Du Gu clan who finally found a place to hide.
This was indeed a difficult situation.
Ultimately, Ye Qiu and Lei Yi decided not to kill the boy and to temporarily take him back. However, to prevent the boy from sending information back to Tiangong, they had to knock him out and seal him inside the Grand Emperor Bell, cutting off any possibility of exposing their scent. They would then make a decision upon returning to the Du Gu's current stronghold.
