woman standing indoors, presumably in a public space

woman standing indoors, presumably in a public space. She is wearing a light-colored coat, a yellow top, black pants, and black shoes. She is holding a cell phone and appears to be looking at it. A purse hangs from her shoulder. In the background, there's an escalator and a blue-tiled wall with some signs on it. A yellow caution sign is also visible. The floor is gray and appears to be made of concrete or stone. Based on the location 龙溪街道, China, it's likely this scene is from a subway station or a similar public transportation hub.