I come from Shanghai, and I usually study German. In Tongji University, the textbook used in weekend amateur classes is: Traveling around Germany. Personally, I think the words in this book are difficult to recite, but the words in each lesson can be learned with pronunciation. The textbook used in the preparatory course at Tongji University is: intensive course of new refined German. I have also studied this book. I think this book is quite good, and I have heard a lot. The German textbook of New Oriental is: Standard German. If the teacher doesn't take you to learn this book, the grammar will be chaotic and the texts will be relatively few. Then I personally recommend the counseling book for the preparatory course of Tongji University in Germany, which is an intensive course of new German. There is a pronunciation tutorial in front of the primary book, which is very good. You should know that Tongji's German is very famous all over the country. Tongji was originally founded by Germans, and now the German academic center is here in Tongji, so please believe me!