Here's a thread with images from Avatar The Last Airbender, featuring its primary references of Inuit, Chinese, Tibetan, Japanese, and other East Asian cultures, including cultural reference images:

Traditional Korean Crown & Fire Lord Headpiece / Hall of Supreme Harmony Interior & Originak Fire Lord's Throne Room

Inuit Clothing & Southern Watertribe Clothing / Korean Winter Headwear & Northern Water Tribe Headwear

Thai Clothing & Fire Nation Ember Island clothing, worn by Katara and Azula

Qing Dynasty Soldier & Earth Kingdom Royal Guard / Qing Dynasty Official & Dai Li Agent

Archetypal East Asian "Fairy" & Moon Spirit Yue / Geisha & Kyoshi Warriors

Traditional Chinese Armor & Fire Nation Soldier Armor / Forbidden City & Ba Sing Se Palace

Tibetan Monks and Traditional Robes & Air Nomad Robe / Bhutanese Buddhist Temple & Air Temple

Manchurian Qipao & Ba Sing Se Upper Ring Clothing / Yellow Crane Tower & Fire Temple

Bonus: Sun Warriors (earliest firebending nation who learned from Dragons) is primarily based on pre-Columbian Mesoamerica, including Aztec, Incan, & Mayan empires. Heavily inspired by SE Asian & NA Indigineous cultures.

If you love learning about Avatar: The Last Airbender, and the beautiful art and cultural influences that went into the show, check out the official art book--
https://www.darkhorse.com/Books/16-782/Avatar-The-Last-Airbender--The-Art-of-the-Animated-Series-HC