Its definition often gives rise to disagreement. Mainlanders take the view that since coming to Taiwan, they too have lost their mother tongue, so why is nobody trying to revive the mother tongues of people from Xinjiang or Shanxi?
其認定就經常引發爭議，「外省人」認為來台後，他們也失去了母語，為什麼現在沒人要復興新疆、陝西人的母語呢？