Test your IQ.

The original question is probably like this?

A traveler was trapped. After a long time, he found two exits-the door of life and the door of death. Every exit has a gatekeeper-people from the country of truth and people from the country of lies. People in the country of truth can only tell the truth, while people in the country of falsehood can only tell lies.

but

You don't know which is the birth gate and which is the death gate.

You don't know who is from which country.

The traveler only asks a person a question and knows which is the birth gate.

What questions did the traveler ask? (only one question)

Answer: another person will say, that door is a dead door.

Right?