Visitors wear VR (virtual reality) devices to learn archaeological knowledge during the 2018 World Conference on VR Industry in Nanchang, east China's Jiangxi Province, Oct. 19, 2018. The 2018 World Conference on VR Industry opened here on Friday. The three-day event attracts more than 150 global exhibitors in the virtual reality field. (Xinhua/Peng Zhaozhi)