Legend has it that the scorpion spirit and snake spirit are imprisoned in Calabash Mountain. A pangolin accidentally penetrated the cave, and two goblins escaped. From then on, the people suffered. The pangolin hurriedly told an old man that only by planting seven-color gourds could the two goblins be eliminated. The old man planted seven big gourds, red, orange, yellow, green, green, blue and purple... At the same time, the two goblins also learned that as long as the seven gourds are put into the furnace, they can make the elixir of eternal youth.