This excerpt shows a tone of admiration through all of the words the narrator uses to describe the subject. He says they are "fierce as a dog" and "cunning as a savage". Fierce and cunning are two words that seem admirable to the narrator. The word "rebuilding" at the end also shows admiration, as the subject keeps rebuilding after things have been broken down.
The Three Principles of the People is a political philosophy inspired by the Gettysburg Address. It is of great importance for the people of china and the establishment of a free from outside influences China.