chū / le / wèn / tí / yǐ / hòu / cái / shuō / zǎo / jiù / zhī / dào / zhè / zhǒng / shì / hòu / cōng / míng / méi / yǒu / yì / yì出了问题以后才说早就知道,这种事后聪明没有意义。Saying you knew it all along after a problem occurs is meaningless hindsight.