Luan tree is a tall and straight tree with an umbrella crown, which can reach 30 meters high. Also known as lantern tree, cash cow and golden rain tree, it belongs to Luanshu of Sapindaceae. Luan tree has dense and beautiful branches and leaves, a natural round crown and mostly red leaves in spring. August and September are the flowering periods of Luan trees. Small golden flowers, tender and fresh, grow together like bees in a hive. Flowers withered and fell to the ground, and some fell to the ground like osmanthus, but there was no fragrance of flowers. About half a month later, the tree began to be covered with countless small green lanterns the size of a thumb, which is the capsule of Luan tree. It is precisely because the capsule looks like a lantern that people call Luan tree "lantern tree". In September and October, the capsule will turn purple, covered with branches, like a flame, like a string of lanterns. In the autumn wind, strings of capsules sway and rustle with the wind. Perhaps for this reason, Luan tree also has a nice name called "cash cow". The tree is full of golden flowers and pink fruits, which are very eye-catching and beautiful. It is really a different kind of scenery.