come from behind and get ahead of others; the late comers surpass the early starters (/the old-timers)
❍ 陛下用群臣如积薪耳，后来者居上。(《史记·汲郑列传》3109) Your Majesty appoints ministers in the way men stack firewood:the latest to arrive are piled on top.
后来居上
successors surpass their predecessors;The latecomer comes out first;catch up from behind
～，超过前3队leapfrogging three teams
后来居上hòu lái jū shànɡ
比喻后来的人进步大，超过了前人。the late comers surpass the old-timers, to overtake sb. from behind, catch up from behind