Why does Han Yu want to curse?
Because he's not a person from the Celestial Dao Sect at all, and since he's not, he couldn't possibly have any backup left by the Celestial Dao Sect.
If they use him to activate the array and nothing happens at that time, it's sure to be exposed.
So, upon hearing Mu Zili's words, it became very difficult for Han Yu to remain calm.
If it's exposed, he doesn't know if Mu Zili would let him go.
Likewise, Mu Zili's gaze was equally complicated.
After going through some things, Mu Zili re-evaluated, growing increasingly suspicious about Han Yu's identity.
This probably couldn't be the backup prepared by Qionghua Hall.
Mu Zili even had a certain degree of confidence, whether it's the Central Continent's attitude towards Han Yu, or Han Yu's attitude towards the Central Continent.
