A sea of 12,000 heliostats concentrating sunlight onto a 260-meter tower—Dunhuang’s molten-salt solar thermal giant. It stores sunlight as heat, runs day and night, and cuts 350,000 tons of CO2 annually. All with homegrown tech!#InnovativeChinaChinese Mission to UN @Chinamission2un · 2026-07-23你的浏览器不支持视频播放。0:00 / --:--