A guide explains the Hyperloop, a proposed high-speed transportation system, at T.um exhibition hall in Seoul, South Korea, July 19, 2022.(Photo: Xinhua)
A guide explains an artificial intelligence doctor at the medical room aboard the "space shuttle" at T.um exhibition hall in Seoul, South Korea, July 19, 2022.(Photo: Xinhua)
Photo taken on July 19, 2022 shows the remote control device at a "space control center" at T.um exhibition hall in Seoul, South Korea.(Photo: Xinhua)
A guide explains a "flight shuttle" at T.um exhibition hall in Seoul, South Korea, July 19, 2022.(Photo: Xinhua)