THE ZEN MASTER MU-NAN HAD ONLY ONE SUCCESSOR. HIS NAME WAS SHOJU. AFTER SHOJU HAD COMPLETED HIS STUDY OF ZEN, MU-NAN CALLED HIM INTO HIS ROOM AND SAID, "I AM GETTING OLD, AND AS FAR AS I KNOW YOU ARE THE ONLY ONE WHO WILL CARRY ON THIS TEACHING. HERE IS A BOOK. IT HAS BEEN PASSED DOWN FROM MASTER TO MASTER FOR SEVEN GENERATIONS, AND I HAVE ALSO ADDED MANY POINTS ACCORDING TO MY UNDERSTANDING. THIS BOOK IS VERY PRECIOUS, AND I AM GIVING IT TO YOU TO REPRESENT YOUR SUCCESSORSHIP." SHOJU REPLIED, "PLEASE KEEP THE BOOK. I RECEIVED YOUR ZEN WITHOUT WRITING, AND I WAS VERY HAPPY WITH IT, THANK YOU." MU-NAN REPLIED, "I KNOW THAT, BUT THIS GREAT WORK HAS BEEN CARRIED FROM MASTER TO MASTER FOR SEVEN GENERATIONS, AND IT WILL BE A SYMBOL OF YOUR LEARNING. HERE, TAKE THE BOOK." THE TWO WERE TALKING IN FRONT OF A FIRE, AND THE INSTANT SHOJU FELT THE BOOK IN HIS HANDS HE THRUST IT INTO THE FLAMES. MU-NAN, WHO HAD NEVER IN HIS LIFE BEEN ANGRY BEFORE, SHOUTED, "WHAT ARE YOU DOING?" AND SHOJU SHOUTED BACK, "AND WHAT ARE YOU SAYING?"