This device has a round mouth, stubby neck, full shoulders, bulging abdomen, and lying feet. The whole body is blue and white, the neck of the jar is painted with back-shaped patterns, and the flower patterns on the shoulders are alternately distributed with sea patterns, and the layers are well-defined. The tank body is painted with a dragon on it, the dragon body is majestic, the dragon claws are relaxed, the hole is strong, the dragon is majestic, the dragon fins stand proud, and the dragon scales are even. Decorated with tangled lotus pattern. Bottle book: Ming Xuande year system. The end is drawn with a banana leaf pattern near the foot, beginning and ending. The soles of the feet are brown, with a strong sense of history.