Understanding the world, integrating into life, and creating the future should start from basic culture, and civilisation should also start from cognition. The simple combination of letters and numbers forms a fresh and pleasing picture. Using the principle of composition, 26 letters and 10 numbers are unified together, showing the order in the chaos, and the cold and warm colours are interspersed. If the grasp is not stable, it will be chaotic. The overall colour is elegant and comfortable, which is suitable for decorating a quiet room.