A human's senses were not that accurate. No wonder Shen Jiushuang said that he had to do it at least a few dozen times. However, that was not a problem for Xu Tui.
Xu Tui immediately entered the illusory introspective state when Shen Jiushuang guided him for the second time. Under the illusory introspective state, Shen Jiushuang's guidance seemed to have drawn an extremely simple diagram of how his energy field worked.
Xu Tui memorized all of it.
After the third round, Shen Jiushuang retracted his hand. There was a slight sheen of sweat on his forehead. This kind of guidance was much harder than cultivating his body. This was another important factor that restricted the development of genetic ancient martial arts.
"Did you note it down?"
"Yes, I did."
