At the Huaneng Nuozhadu Hydropower Station in southwest China's Yunnan Province, a key project to save the local fish species in the Lancang River is underway. The construction of hydropower stations on the Lancang River aims to solve the problem of drought in the Mekong River Basin. But, there are ecological costs to such infrastructure, which is why efforts to protect biodiversity are part of the station's projects. CGTN reporter Cen Ziyuan tells us about the breakthroughs that have been made in protecting the river's ecological system.