彰往考来

Explanation: Refers to exposing the past, study the future. 　　Source: Language of the "easy copulative under the" husband "easy" to Chang to the police, while the micro-display illustrates quiet. "Brief Account must be contained sparse past, is to have Akira; to account for what yu, is observed to have." Gao Heng Chang to note that past also. Observation, the observation of things as well. " 　　Examples: Ruofu production of the text, so ~, the situation almost see the speech. ★ Jin Du Yu "<Spring and Autumn Annals> Preface"