HONG KONG/SHANGHAI, July 21 (Reuters) - China's Premier Li Qiang announced construction had begun on what will be the world's largest hydropower dam, located on the eastern rim of the Tibetan Plateau and estimated to cost around $170 billion, the official Xinhua news agency said.

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,

China's Premier Li Qiang announced construction had begun on what will be the world's largest hydropower dam, on the eastern rim of the Tibetan Plateau, at an estimated cost of at least $170 billion,