vehicle wrap design, side view of white bus mobile library, flat vector illustration, simple and elegant scholarly style, theme: "tide surges in the yellow sea, charming bajiao bay". elements: ocean wave lines, open books, library logo. color palette: soft blue, light cyan, off-white, gentle colorful flowing lines. high visual recognition, public welfare advertisement for national reading, mobile library service of yantai huangbohai new area library. text layout reserved, avoid window areas, clean vector graphic, white background, printable car livery, high definition, no complex shadows, original design