The overall shape of the bus is originated by BLK who possesses appearance patent, which is optimized and upgraded from double deck bus designed for South American market; the bus uses insect as prototype and designs by specific bionic modeling, the body line ismellow and full, not only conforms to modern aesthetics but also can reduce wind resistance coefficient, which makes the best balance between aesthetics and economy. The front and rear walls are connected with decorative strips of side windows, the bus also uses 0.618 golden section in many areas including rear enclosure door air-inlet grille shape part, rear tail light position, rear windshield and 2 rear doors to reach the best visual effect. The bus line is mellow and full, divided by streamlined line, taking the large surface as datum, matched with the pattern of front-low & rear-high and front-heavy & rear-light, the collocation of line and color makes the bus looks very dynamic, generous and modern.