按图索骥àn tú suǒ jì

骥：好马、千里马；索：寻找。原指按照伯乐的《相马经》去寻求好马。

英look for a noble steed with the aidof its picture; look for sth.according to information at one's disposal; look for sth.by a plan chart;

引申为依照既得的线索去寻找目的物。讽喻拘泥成法、食古不化、不知权变的人。

英lacking originality; initiative or imagination in doing a job;