Lhoka Prefecture is also called as Shannan Prefecture. The prefecture covers an area of 79700 square Kilometers. It is located on the south of Lhasa Prefecture, west of Nyingtri Prefecture, east of Shigatse prefecture and north of Bhutan and India. The topography averages at 3700 Meters above sea level, making it lower than the Lhasa and Shigatse prefecture. The population of the Tsedang city was 330,100 in the year 2007. https://itibettravel.com/tibet-travel/tibet-destinations/lhokha-prefecture-travel-guide/