草率从事

Explanation: Rash: careless, half-heartedly. So-so to deal with. Described as not serious work. 　　Usage: Partial official; as the predicate attribute, complement; containing derogatory 　　Source: Qing Zhao Yi "Nianer Literary History of New Tang calligraphy of the century": "When the history of the early Ming Xiu, which according to its written into, with no reciprocal to each other in order to return a painting can also be reflected in the too hasty." Thesaurus:  huddle, sloppiness to finish up a matter