My Identity Was Exposed in the Census

What will happen when a doctor from Earth comes to the parallel world? Is it good or difficult? No one would know where he came from, but people would just know that he was a very good doctor. He has won many national awards. He also participated in a series of wars. What will happen to a 100-year-old man after he participates in the census? If the introduction is weak, please read the chapter. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.