This was Constellation Mobius, one of the interactive installations I created for the 2018 new media art exhibition held in Tongji University.  This artwork stood for the seamless integration of art and science.  A visitor may draw or leave a message on the touch screen, take a smug shot and save the composed image in the computer.  These saved images gradually became a constellation in the shape of a mobius stripe against the starry universe.  A later comer may click on it to read the messages left by earlier visitors.