double shoulder backpack, large capacity, with insulation layer. side pockets designed to hold an umbrella, with water-resistant fabric at the bottom of the side pockets for drainage. traditional chinese colors, fresh and harmonious design. the backpack should feature sleek, modern aesthetics combined with elements of traditional chinese art, such as subtle patterns or motifs. the material should appear durable and functional, with a focus on practicality and style. a clean and fresh overall look, suitable for everyday use.