搀前落后

Explanation: Grab before backward, do not purge 　　Usage: Joint type; as predicate, object; containing derogatory 　　Source: Qing Cao Xueqin's "Dream of Red Mansions" at 99 back: "Jia Zheng will also angry and said: 'Fortunately, as usual, gathered at this point is not how today?' Look at the rise of the deacon, but it is behind the mix before."