心细如发

Explanation: Made a very careful, careful consideration. Also be cautious on the issue. " 　　Source: Wu Mei "Fantasy inkstone Room chess problems" in the poem is quite good defensive tactic chess news, but cautious, such as hair only as a bucket. " 　　Examples: Eight or nine years of military life and her special status, to develop her manners sophisticated, generous, right and wrong, failing to decisively, but ~. ★ Yao Xueyin "Rereading," Volume IV Thesaurus:  scrupulous In fat