Aerial photo taken on Oct. 21, 2020 shows an unmanned patrolling and waste collecting machine works in a river in Hangzhou, east China's Zhejiang Province. A series of high-tech measures were applied to improve the river ecosystem in Hangzhou, including unmanned boats patrolling, automatic watercourse waste cleaning system, artificial intelligence (AI) monitoring system, etc. (Xinhua/Xu Yu)
High-tech measures applied to improve river ecosystem in Hangzhou
Source: Xinhua| 2020-10-21 16:50:13|Editor: huaxia