One bottle of water: Tracking a lake's comeback

How do you keep an eye on a 300-square-kilometer lake? In Xiongan, Baiyangdian is watched on four levels: satellites from space, drones in the air, monitoring trucks on the ground, and 12 automatic stations on the water, some placed right where rivers flow in. Robot boats sample as they move, the monitoring boat carries its own lab, and an AI lab on shore can test 100 samples a day for a single indicator, with results the next day. All of it reports to one screen. The result? Class III since 2021. 📺 Subscribe to our YouTube channel and stay updated with our latest analysis and interviews:👇 https://www.youtube.com/channel/UCgrNz-aDmcr2uuto8_DL2jg 👈 Download our APP on Apple Store (iOS): https://itunes.apple.com/us/app/cctvnews-app/id922456579?l=zh&ls=1&mt=8 Download our APP on Google Play (Android): https://play.google.com/store/apps/details?id=com.imib.cctv For more: https://www.cgtn.com/video Most watched videos: Impossible Challenge: 30 seconds to count banknotes BLINDFOLDED https://www.youtube.com/watch?v=ZmP_Ybj-jws Impossible Challenge: Gymnastics Boy Arat Hosseini from Iran! https://www.youtube.com/watch?v=8sxX--U4c8w Impossible Challenge: How to calm babies in 5 seconds? https://www.youtube.com/watch?v=kR3q9sXM7WA