Gong Qiying believes deeply in the bonds between adventurers and also in their strength.
So he didn't continue watching, as the outcome was already clear.
The adventurers winning is due to Sain's mercy; if they lose, it shouldn't come as a surprise, as that's the norm. If Sain truly didn't want adventurers to pass, they wouldn't even get past the initial Fran Fort.
As for Pope Shalivan's phantom, it's purely a creature of stats; with it there, don't even think about passing through.
The difference between it and a door that "cannot be opened from this side" is that it moves; otherwise, they both serve to block adventurers' steps.
But then again, why wouldn't Gong Qiying let adventurers pass?
Is it because the scene of Yanor Londo isn't finished yet?
No, no, it's already done. Even the Yanor Londo in the Painting World is complete, and even the stats for Phantom Ornstein, Phantom Smough, and the others... cough, cough, have been adjusted.