many students in my class newly perchased this book less than 5 months ago, and within 2 months of barly any use, many students were complaining that the book's bindings were falling apart! almost all of the class's books were falling apart. also, many of the chapters have hundreds of vocab words, but many of the vocab words are repeated and repeated! it is nice that the book gives both simplified and traditional characters, but the grammar examples and the homework exercises are only done in simplified...which is a real pain if you only know traditional.