Tell a joke: "Once upon a time there was a eunuch, below ..."

On one occasion, Ji Xiaolan met a eunuch at the city gate.

The eunuch stopped Ji Xiaolan and wouldn't let him go.

Let him tell a joke before he goes.

Ji Xiaolan said, "Once upon a time there was a eunuch ..."

The eunuch hurriedly asked, "What's the next step?"

Ji Xiaolan said, "There is nothing down there."