Yáoyán rú yěhuǒ liáoyuán, hěnkuài chuán de rénrén jiēzhī.
The rumor spread like wildfire and was soon known everywhere.
Tips
history
燎 means to burn across an area. The famous line 星星之火,可以燎原 ('a single spark can set the whole plain alight') is used for a small beginning that grows unstoppable.