Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An informative introduction and in-depth analysis of each of the martial arts practices of China

Nei Jia Quan: International Martial Arts is collectively written by thirteen knowledgeable teachers of Tai Ji Quan, Xing Yi Quan, and Ba Gua Zhang and is ably edited by Jess O'Brien. Nei Jia Quan informs the reader of the many varying perspectives of the philosophy, history, training methods, and fighting technique that make each of these fighting styles unique and individually inspiring. As an informed and informative introduction and in-depth analysis of each of the martial arts practices of China, Nei Jia Quan is a very highly recommended read for all students of the martial arts, as well as those with an interest in Chinese history and general culture.