@@tibetandancelover4737 American genetic studies indicate that Eastern Tibetan (khampa) genetically related to Han. Lhasa Tibetan genetically related to nepali sherpa. You need to read more scientific findings.
Also sherpa people were conquered by khampa noble and converted into Tibetan culture. Physically khampa people are tall, lighter skin, strong temperament. Lhasa Tibetans are short, dark, mild temperament because they are really nepali sherpa. Another tall people in Asia is Han, genetically related to Khampa. Evidences are in the genes.
@@alexoolau Sherpa are essentially of Tibetan origin and they are believed to have migrated outside of Tibetan in 13th and 14th centuries due to internal conflicts between religious sects in Tibet. Even the word Sherpa is Tibetan for “Easterners” or “Inhabitants of the East”