无的放矢

Explanation: The bull's-eye; vector arrows. Target archery is no chaos. Metaphor does not explicitly say the purpose of doing things, or not practical. 　　Usage: -Linked; as the predicate attribute, object; containing derogatory 　　Source: Mao Zedong's "Reform Our Study" is not targeted, but random. " 　　Examples: Not targeted, but ~. (Mao Zedong's "Reform Our Study") Thesaurus:  No one save a hundred, play the harp( (lute) to a cow; cast pearls before a swine, Bovine drum spring, waste one's words, make a very wild boast about sth. as if it were raining flowers, Tiannvsanhua, 3 Paper no ass Antonym Group:  teach students according to their aptitude, suit the medicine to the illness, Symptomatic Dispensing, shoot the arrow at the target, take measures in time