Doucai is a technique that combines blue-and-white porcelain with colorful designs, creating a vibrant contrast where the colors compete for beauty, hence the name. The cup body is decorated with the Eight Treasures, symbolizing good fortune, happiness, and completeness. The glaze is smooth and jade-like, with a classic and elegant color tone. The delicate hand-painted design is full and aesthetically pleasing, with flowing lines and exquisite details, making it both beautiful and refined.