Daily Chinese Idiom Guessing Game
To swarm up or rush forward all at once, describing a crowd or group moving together eagerly or chaotically.
一下子全都围上去。形容周围的人同时向一个目标猛挤过去。
明·罗贯中《三国演义》第六十七回吕蒙亲自擂鼓，士卒皆一拥而上，乱刀砍死朱光。”
As soon as the shop opened, customers swarmed in all at once, buying up the discounted items.