Petra, the ancient city of Jordan, is called "the city of roses", with brown, red, orange, purple, light blue, yellow and green rocks. The twisted rock layers with different colors form spiral and wavy color curves on the rock surface, and tourists can't see the wonderful scenery there after staying for a week. So, the clever Petra people came up with the idea of grinding rocks of different colors into stone powder, putting them into various glass bottles, and sketching out different patterns of Petra, so that guests can recall and appreciate the charming scenery endowed by nature at any time through sand bottle painting after returning home.