The book contains three parts 1) correspondence from Prof. Paul Demieville to Prof. Jao Tsung-i, 2) correspondence draft from Prof. Paul Demieville to Prof. Jao Tsung-i, and 3) correspondence from Prof. Jao Tsung-i to Paul Demieville. The origins of the first part is now preserved by the Jao Tsung-I Foundation, while the ones of the latter two parts, donated by Prof. Demieville’s daughter in 2006, are now collections of the Demieville Archive of Jao Studies Centre, Jao Tsung-I Petite Ecole, HKU. The correspondence witnesses the history of the academic and cultural exchanges between the two great sinologists respectively from China and France, but could also give the readers a glimpse of their charisma at the time.