Which book is a good introduction to Liu Ren? thank you

Mislead future generations! ? Don't read modern books, because people who write modern books don't understand, copy, edit, pretend and cheat. Learn the basics first. To tell the truth, the knowledge of a class alone will be great, and serious research will also yield great results. Don't waste time and energy on the hands of those "masters". I really want to read books. Do you recommend Gui Ren? Wuling edition. ? If you want to learn six benevolence, you should first ask what is the purpose of learning six benevolence, and that is the long-term solution. ? A book, an inspiration and an interest are not enough to support the skeleton of life. The teacher said, "real kung fu is outside of kung fu"? No learning skills. ? If you are well-meaning, forget the landlord and think for yourself.