Smart technologies at Hangzhou Asian Games

Sources: Xinhua, People's Daily, Guangming Net, Graphic: Yu Tianjiao/GT

Sources: Xinhua, People's Daily, Guangming Net, Graphic: Yu Tianjiao/GT

Sources: Xinhua, People's Daily, Guangming Net, Graphic: Yu Tianjiao/GT

Sources: Xinhua, People's Daily, Guangming Net, Graphic: Yu Tianjiao/GT