རྒྱལ་སྲས་ཆུང་ངུ་། — in Tibetan. Tibetan is the most widely spoken form of the Tibetic languages. It is based on the speech of Lhasa, an Ü-Tsang (Central Tibetan) dialect. For this reason, Standard Tibetan is often called Lhasa Tibetan. The written language is based on Classical Tibetan and is highly conservative.