Avatar: The Last Airbender (2005)

The Cave of Two Lovers - S2-E2

Iroh: Where are we going to go? We are enemies of the Earth Kingdom, and fugitives from the Fire Nation.
Zuko: If the Earth Kingdom discovers us, we'll be killed.
Iroh: But if the Fire Nation discovers us, we'll be turned over to Azula.
[Iroh and Zuko give each other a meaningful look.]
Zuko: Earth Kingdom it is.

Friso94

The Drill - S2-E13

General Sung: Nevertherless, that is why the city is called Ba Sing Se: it's the Impenetrable City. They don't call it Na Sing Se! That means Penetrable City.