The so-called Chande theory, wave theory, harmonics, and Wyckoff that you talk about, it's not that I don't understand; I used to study them every day, and I might understand more than you. But later, after spending real money for a long time, I realized one thing: these things are worthless. One day I finally discovered a question: do the authors of these books make more money than Livermore? No, they don't. So these authors are trash, and their books are trash. You only need to study Livermore. Do these authors make more money than Duan Yongping or Buffett? No, they don't. So these authors and their books are trash; you only need to study Buffett and Duan Yongping.