cháy nhà mới ra mặt chuột

Proverb

 * 1)  when the house burns, the rodents show their faces; only after the house is incinerated will people who burn it show their mousy faces
 * 2)  when there's a fallout, breakdown or collapse, the bad actors or the corrupt that've hidden behind the scenes this whole time will have no choice but show their true identities; only when everything fails will the bad people be known behind the failure