The Walls of Ba Sing Se - Avatar: The Last Airbender

"The Tales of Ba Sing Se" is the 15th episode of the second season of the animated television series Avatar: The Last Airbender, and the 35th episode overall. The episode, directed by Ethan Spaulding, originally aired on Nickelodeon on September 29, 2006. It features six short vignettes of several of the series's main characters as they go about a day in the city of Ba Sing Se. The episode constitutes a break from the previous more serious, plot-heavy episodes, and instead focuses on character development; the main plot of the season is advanced only in one of the six vignettes, the tale of the winged lemur Momo.