Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Xing Yi and Chi Kung

I've been practising chi kung and the Wu style Tai Chi deligently for nearly a year now. I bought "Xing Yi Nei Kung" thinking that it would help me develop my internal power. However, I don't find the exercises described in the book to be any superior to the chi kung (for health and martial) that I'm learning. Still, it is a great book for those who are not initiated in the art.