The Galaxy's Poetry Collector

On the day Zheng Xuan decided to kill herself, Earth was on the brink of destruction. The [Poetry Collector] hired her to gather materials that could represent human civilization.

Zheng Xuan: My heart is already dead. Find someone else to do it.

Alien: A million a day, paid daily, no delays.

Zheng Xuan: ???

Zheng Xuan: Specify the currency.

Alien: The most widely used currency on each planet. On Earth, I think that's the dollar? We can convert it to RMB for you, at an exchange rate of seven to one.

Zheng Xuan: All right, esteemed visitor from the stars. I'll do anything you want.

Alien: Wasn't your heart dead?

Zheng Xuan: My heart may be dead, but my body can still make money. We Earthlings are terrifying.

Theme: For the sake of freedom, I can give up either of the other two.