[xiāo shǒu shì zhòng]   

枭    首    示    众    斩首悬示于众。

旧时酷刑，把人头砍下来并高挂起来，使众人都看到。

Expose a cut-off head to public view as a warning to

枭首示众    枭心鹤貌    枭蛇鬼怪    枭俊禽敌    枭视狼顾