一哄而起
rush headlong into mass action;(of a group of people) be aroused to precipitate action;start sth on the spur of the moment
一哄而起yī hònɡ ér qǐ
哄:喧嚷。形容一阵喧闹,人们自发地行动起来。rush headlong into mass action, plunging headlong into the fray, be brought about in a rush