一下子全都挤了进去的成语

Ning Cheng watched the red-faced Xuandan cultivator and his men pounce directly on his hidden killing formation, and sighed inwardly. The most taboo thing about the confrontation between the two armies is hesitation. The Yixinghai monk army, which was originally in a good situation, thought about leaving and had no intention of fighting. After a moment of hesitation, the formation immediately fell into chaos....