I am a dual national, but have a question regarding my passport. I was just reading that if your passport number starts with an “X” that means it is not an actual ROC citizen’s passport, but a Overseas Chinese passport. However, I don’t know if this is neccessarily true. I was born in Taiwan to Taiwanese parents and had an ID number and an original Taiwan passport. I was adopted and went to the USA. But I have reclaimed my Taiwan citizenship and have my ID card, but I did notice my passport number starts with an “X”, but it also shows my ID number as well. So, how can my passport be an “Overseas Chinese passport” when I original nationality is Taiwan?