books.google.com - This book is the first on Chinese eunuchs in English and presents a comprehensive picture of the role that they played in the Ming dynasty, 1368-1644. Extracted from a wide range of primary and secondary source material, the author provides significant and interesting information about court politics,...https://books.google.com/books/about/The_Eunuchs_in_the_Ming_Dynasty.html?id=Ka6jNJcX_ygC&q=envoys&utm_source=gb-gplus-shareThe Eunuchs in the Ming Dynasty
