The abilities that Alkaid had displayed were already beyond what the Yin Moon Sect could withstand.
Even though they still had their strongest three Supreme Elders at the Star Core, but...
Call them back?
Don't even think about it.
Otherwise, they would have to face the wrath of a Dao Lord.
What's the point of having a Yin Moon Sect that's useless, unable to handle even the smallest task?
And if they couldn't bring back the manpower from the Star Core...
Sealing the mountain...
It really was the only choice left.
For a moment, the previously furious Moon Shadowless felt his emotions dissipate, as if all the strength had been sapped from his body: "The dignified Yin Moon Sect, one of the Six Sects of the Demonic Dao, being forced by a single person from the Heavenly Dao Sect to seal our mountain..."
Disgrace!
Utter disgrace!