The photo, taken on December 8, shows foreign guests taking photos on a Zhuzhou-made autonomous rail rapid transit (ART) train. Domestic and foreign guests took the ART train to enter the exhibition hall of the 2021 China International Rail Transit and Equipment Manufacturing Industry Exposition (China InteRail Expo) on that day to experience the leading rail transit technology in the world. (Photo/Fu Cong, Li Jian)