Faced with these five thick books, I will feel very confused at first and don't know where to start. There will be many detours at first, and some detours will be suddenly enlightened. The suggested review method is a book and an original work. It's really stressful to pile up the "five mountains". Read the books and notes compiled by senior sister together. The materials are for reference only, mainly books. While reading, arrange a note of your own thoughts. Everyone's review method is different, and what I summarize, sort out and absorb really belongs to me. Be sure to think while reading, or you may feel blank after reading the book.