Prompt: You have decided to ask Lillian for information about the treasure. Lillian smiled, her petal skirt emitting a faint floral fragrance. Lillian: \"The legendary treasure is hidden in the deepest mysterious cave of the Magic Forest. To go to the cave, you must first pass three trials: the freezing of Crystal Lake, the riddle of Dream Forest, and the shadow of Flowing Firefly Valley. Each place has a key, unlock them, and the treasure will be revealed to you.\" You feel excited and know that this will be a wonderful adventure. Lillian guides you to Crystal Lake. When you reach the lake, you find that the water is clear and transparent, with a thin layer of ice floating on the surface of the water. There are three paths by the lake that lead to different directions of the lake.