The so-called mind-body separation was to separate one's mind from one's body. It was like the soul leaving one's body, but it was not completely the same. The soul leaving one's body meant that one's body could not move once the soul left the body. The mind-body separation required by the star body forging technique was to separate the mind power from the body. In other words, once the mind power left the body, it would be like a person controlling a puppet. He didn't know how it felt to be a puppet. He just connected the strings and controlled it according to his thoughts. It was the same when he separated his mind and body.
Although it was written on the STAR technique that there would be this and that kind of danger, Zhao Hai still wanted to learn the star physical conditioning technique. He always felt that this star physical conditioning technique would be very useful to him.