a cinematic time-travel animation poster. two ancient chinese girls sitting on a wooden boat. the left girl has a pale blue dress and a long black ponytail, holding a black lacquer box. the right girl has a purple robe and a double-loop bun, holding bamboo slips. composition: the upper half of the image is purely ancient: traditional ink-wash misty mountains and a large empty sky for title. the lower half is the river surface, acting as a mirror that reflects a modern suspension bridge and glowing city neon lights. the characters remain perfectly 2d flat and unaffected by modern lighting. art style: strictly 1970s-1980s shanghai animation film studio gouache style, flat color with single-line outlines, traditional chinese watercolor texture, vintage film grain. 8k,