Name the most influential book of Phan Boi Chau. Write about the two themes related to this book

Name the most influential book of Phan Boi Chau. Write about the two themes related to this book.

THE History of the Loss of Vietnam’ was written by Phan Boi Chau.
Two Themes :

  1. The loss of sovereignty.
  2. The severing of ties with China-ties that bound the elites of the two countries within a shared culture.