black sign with the words "Lecture Hall" in English and "学术报告厅" in Chinese on a dark grey tiled wall

black sign with the words "Lecture Hall" in English and "学术报告厅" in Chinese on a dark grey tiled wall. The sign is located in the Chongqing University of Posts and Telecommunications in Chongqing, China, based on the given coordinates. The location of the sign suggests a public area like a hallway or a corridor. There are no people visible in the image.