一鬨而散

see 一哄而散[yi1 hong1 er2 san4]

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

tumult / uproar / commotion / disturbance

and / as well as / and so / but (not) / yet (not) / (indicates causal relation) / (indicates change of state) / (indicates contrast)

variant of 散[san4]

scattered / loose / to come loose / to fall apart / leisurely / powdered medicine

to scatter / to break up (a meeting etc) / to disperse / to disseminate / to dispel / (coll.) to sack