按图索骥 (按圖索驥) àn tú suǒ jì

àn tú suǒ jì set phrase search for a horse using a picture; search based on clues
Domain: Idiom 成语
Notes: The idiom is based on an allusion to a story from the state of Qin in the Spring and Autumn period (CC-CEDICT '按圖索驥'; CCI '按图索骥', pp. 107-108; Guoyu '按圖索驥'; Mathews 1931 '按圖索驥' p. 5)