When there is no data influence, it is actually easier to judge the middle line. At the beginning of a wave of middle lines, it is not like a short line that can be judged after a skilled indicator forms a pattern. To judge the reversal of medium and long lines, multiple technical forms are needed, usually looking at daily and weekly lines. This method requires a certain level of technical foundation and proficiency in the face, and after a period of training, I believe you can learn this skill.