The dam will be located in the lower reaches of the Yarlung Zangbo. India and Bangladesh have already raised concerns about its possible impact on the millions of people who live downstream.

Chinese authorities have begun constructing what will be the world's largest hydropower dam in Tibetan territory, in a project that has sparked concerns from India and Bangladesh. Chinese Premier Li Qiang presided over a ceremony marking the start of construction on the Yarlung Tsangpo river on Saturday,

The project, part of China’s push to expand renewable energy and reduce carbon emissions, could affect millions downstream in India and Bangladesh.