2020-05-02 blog view blog Ten photos from across China: April 24 - April 30 view blog A Hangzhoujobs.com/view-blog/475" target="_BLANK">child cries during an injection in a health center in Huzhou, Zhejiang Province, on 24 April 2020. Wang Zheng / IN CHINA DAILY Categories: Hangzhou Zhejiang Add Comment Rate and Comment Submit Chinese scientists develop trajectory planning system for collision-free flight of drone swarms Beijing, May 5 (Xinhua) - Chinese scientists have developed a new flight route planning system that can help swarms in miniature and miniature drones Read more → share