At an interview, Kum Ryong (Jon Powell) asked: “Sunim, one day you said it is real when you hit the floor with the staff.? On another day, you said it was an illusion when you hit the floor with the staff.? Is it real or is it an illusion?”
Sunim said: “It is not illusion nor real.”
Kum Ryong asked again, “Then, what is it?”
Then Sunim hit the floor with his staff two times.