The old man who drove a tank to Seoul in 1951

A Chinese old man was looking for his passport at the customs. A Korean policewoman asked impatiently: Is this your first time in Seoul? The old man nodded: second time. The policewoman glared: Since it was the second time, why didn’t you know to get your passport in advance? The old man said: I didn’t use my passport when I came here for the first time. The policewoman disdainfully said: "Impossible! Chinese people need a passport to come to South Korea! When was the last time you came?" The old man said calmly: "In 1951, he came with a tank. It was called Seoul at that time.

There are many elements in the interpretation, so have fun watching it