Beijing's approval of a controversial mega dam in the lower reaches of the Yarlung Tsangpo River, which flows from Tibet autonomous region into India, has sparked concerns about the environmental impact of the project,

China's proposed mega hydropower dam on the Yarlung Zangbo River has raised significant concerns in India due to potential impacts on water security and downstream communities.

The total cost of the dam could go beyond 1 trillion yuan (about $137 billion), making it the most expensive infrastructure project ever built in the world.