The unprecedented anti-Covid “closed loop management” system at Beijing 2022 offers insight into the world of Chinese tech. (Image: China Daily) Sports ओलम्पिक खेलहरू आन्तरिक प्रविधि हेर्न, यो अभूतपूर्व छ फेब 19, 2022, 16:12अपराह्न2022/02/19 23:01:36 Peter Catterall Add to Favorites Added to Favorites Your browser does not support the audio element. Sign up today for 5 free articles monthly! Sign in with Email or subscribe to a full access plan...