There is a hole that can be dug when you go up the stairs together with the place where the mushroom is awakened. Dig it in, and then you come to the object of admiration. There is a big tree above the hut. After sprinting into the magic circle, it changed, entered the room from the back of the hut, pushed the bookshelf to the right, walked to the fireplace and pushed the book down. After collecting all three books, I went to the upper left shelf on the second floor of the library. After chatting with my elders, I suddenly fell into a cave with flippers inside. Now I can swim to the next element maze.