The cover design is one of its highlights, featuring a deep blue background that creates a profound and mysterious atmosphere. It is adorned with colorful tropical fish patterns, each fish with different shapes and lifelike, as if freely swimming in the blue ocean. These tropical fish use a rich palette of colors, such as bright yellow, emerald green, and orange red, which contrast sharply with the deep blue background, creating a strong visual impact and giving a lively and vibrant feeling. The cover material has good wear resistance and waterproof properties, ensuring long-lasting beauty and protecting the pages from damage. The notebook is A5 size (210mm×148mm), which is convenient to carry and provides enough writing space, suitable for daily recording, note-taking, diary, and various other uses.