Chinese modern street cor

Chinese modern street corner, 3 people: delivery guy on electric bike (anxious, helmet, slight frown, mostly back view), relaxed middle-school student in uniform (curious eyes, soft open mouth, front view), cheerful granny walking tiny dog (smile lines, side view); include shared bikes, convenience-store sign, traffic lights, simple background; traditional ink-line sketch style, clean contour lines first, subtle 5% grey shadow only on ground, high contrast black-white, no text, A3 ratio, 300 dpi