今是昨非

Explanation: Now is the right, in the past is wrong. Refers to the understanding of past mistakes. 　　Usage: Joint type; as the predicate attribute, clause; describe one who regrets the error before 　　Source: Jin Tao Qian "Chosun": The "lost not far, feel this was wrong." 　　Examples: However, there is little we actually remember, in retrospect, what kind of "~" Oh, what kind of "duplicity" Oh, what kind of "Yesterday I today I fight," Oh. (Lu Xun's "mentor" Thesaurus:  change with each passing day, as swift as an arrow, the present cannot compare with the past, This is a former non-, Xi is not actually, And progress day by day, day by day The Wind, Animal day Antonym Group:  stress the past,not the present, Zungubeijin, Mugubaojin, affirm the past, not the present, Guiyuanjianjin, Guiyuanbijin, This ancient light weight, eulogize the past at the expense of the present