Zhao Yufeng, a teacher of Peking University, uses online educational system "Classin" teaching advanced algebra in Beijing, capital of China, Feb. 17, 2020. Millions of Chinese students started online learning on Monday, as the new school semester originally scheduled for Feb. 17 is currently postponed due to a nationwide epidemic control mechanism. (Xinhua/Shen Bohan)
Students start online learning across China
Source: Xinhua| 2020-02-18 08:19:29|Editor: huaxia
