I bought an earlier version of this book in Basel, Switzerland in 1994. It has a section on Dr Chi's 10 important points for advanced practise and a 64 question and answer chapter. There is a description of double push hands with line drawings and an exercise to open the hips.
It's a very good book for anyone practising Cheng Man Ching style. I recently found an English version in my local library. There is also a Sword book by the same authors.