C31 Astral tread

"What is it?" Wu Junxuan followed Lei Long into the villa and into a bedroom on the second floor. Lei Long pulled out a leather suitcase from under the bed and took out a book from the pile of clothes inside the suitcase.

Lei Long said softly, "This book should be a martial arts secret manual, but I don't understand it. You practice traditional martial arts, so it might be of some help to you