yiyi,ultra high definition details,yiyi,1girl,solo,skin details,matte skin, sittingon on the left, tired-looking , dressed in a black outfit with a long skirt that has a polka dot pattern. She is looking directly at the viewer. The background shows blurred figures of other passengers. The interior of the subway train is typical of a subway, with overhead luggage racks and a few posters or advertisements on the walls.
