A rather interesting thing to witness in real time, is seeing the light of hope in someone's eyes go out like a candle in the wind, when they're informed of something dire.
Not in the manner of someone's hopes being dashed in a sadistic manner like being told they were going to die anyways despite being given freedom, rather, the sight of seeing someone's greedy expectations going away due to the realization that the thing they want is behind a massive wall.
In this particular instance, the Zhen Clan scions had gone from nervous wrecks to giddy with greed to spirit crushing realization in a matter of minutes.
That's because, as much as they hated to admit it, they were way in over their heads.