Express Gratitude

Mr.Roy Goodman，librarian at the American Philosophical Society，Philadelphia，first drew my attention to van Braam's book.F.W.Mote，emeritus professor in East Asian Studies at Princeton University，gave me his notes on the journal and other materials.The Rare Books Collection of Firestone Library at Princeton provided convenient access to various versions of this book，including the French-language first edition of 1797-1798.Professor Emeritus D.Lacey，Rutgers University，helped make the paper more readable in English.Mr.Cary Liu，Art and Architecture，Princeton University，helped with the illustrations，and Barbara Westergaard helped spare me from a possible blunder.My sincere thanks are due them all.(https://www.daowen.com)