Hello, it can't be a lie. Everything depends on the policy basis. You can go to official website and Tibet Education Department to inquire. As long as you buy a house in Tibet, you can settle down and take the college entrance examination. You can view the following policies or search by yourself:

Zangzheng banfano 200 182 The first point of Article 4 of the Notice of the General Office of the People's Government of Tibet Autonomous Region on Forwarding the Provisions of the Public Security Department of Xizang Autonomous Region on Reforming the Household Registration Management System in Our District to Relax the Household Conditions:

Implement the household-to-household policy. In order to reduce the separation of people and households, we can buy commercial housing or self-built housing in cities (towns) in our district, but those whose registered permanent residence is in different places can settle in this city (town) as long as the housing procedures are complete and there is a stable source of income.

Notice of the General Office of the People's Government of Tibet Autonomous Region on Forwarding the Provisions of the Education Department of Tibet Autonomous Region on the Admission Conditions of Colleges and Universities in the Western Region (No.200613), Article 3, point 1:

Cadres in our region (including cadres aiding Tibet), workers, urban residents, children of farmers and herdsmen, whose household registration is in Tibet, can apply for colleges and universities inside and outside the region.