India, Jan. 1 -- China's construction of what is being billed as the world's largest dam on the Tibetan plateau was one of the highlights of a New Year's address by President Xi Jinping, a clear indication that Beijing is giving short shrift to concerns expressed by lower riparian States such as India and Bangladesh. Work on the $167-billion Motuo Hydropower Station, close to the border with Arunachal Pradesh, began in July, triggering concerns that China will be able to control or divert the Yarlung Tsangpo, which feeds the Siang and Brahmaputra in India and the Jamuna in Bangladesh. Even before work began, the external affairs ministry conveyed India's concerns to China about the impact of such a mega-dam and urged Beijing to "ensure th...