IP travel creative products. The intersection of rivers and seas is a unique spectacle in Dongying. This design uses the yellow of the Yellow River and the blue of the sea as the lights of the aromatherapy machine to show this scene. The aromatherapy machine cover is designed with wavy patterns to show the flexibility of the river and the sea. The hand on the wave is a small boat, implying that the boat is carrying the story from the Yellow River to the sea.