The English language edition of One Lesson One Exercise series is based on the latest Chinese edition of the Yi Ke Yi Lian series,a multiple award-winning bestseller,published by East China Normal University Press. Since it first appeared in the early 1990s,the Chinese edition of the Yi Ke Yi Lian series has been regularly revised and used by millions of students in primary and secondary schools all over Shanghai and beyond. The awards it has won include,for example,an official listing by an authoritative organization of China's book industry in 2009 as one of the China's "300 Most Influential Books in the 30 Years since Reform and Opening Up"(1978-2008),and in 2015,the series was awarded the title of "Shanghai Famous Trademark"by the Shanghai Administration for Industry and Commerce for the third time,the only book(series) awarded the honour by the Administration.