輕車熟路 [ㄑㄧㄥ ㄔㄜ ㄕㄨˊ ㄌㄨˋ; qing1 che1 shu2 lu4] lit. to drive a lightweight chariot on a familiar road (idiom) fig. to do sth routinely and with ease a walk in the park ◄ ►