1. With the unique "double flush" super siphon flush platform with the built-in beauty label, the two water flows are formed after the flush, which brings strong and powerful siphon power, which makes it easy to clean all kinds of dirt. 2. Add large flush keys, feel comfortable. 3. Slow down and fast cover plate, and the clamping hand is safer. 4. The front edge of the cover plate is designed to be more easily lifted. 5. Unique arc-shaped seat design, fit the hip curve more, and sit comfortably.