Gahai Township () is a township in Luqu County, Gannan Tibetan Autonomous Prefecture, Gansu, China. In 2010, Gahai Township had a total population of 5,257: 2,666 males and 2,591 females: 1,383 aged under 14, 3,553 aged between 15 and 65 and 321 aged over 65.
See also List of township-level divisions of Gansu
References