Where does “ニャチャン” come from?

ニャチャン (Japanese) comes from English Nha Trang, from Vietnamese Nha Trang, from English White House — The official home and workplace of the President of the United States of America.

Ancestry of “ニャチャン”, step by step

StepLanguageWordMeaning
1EnglishNha Trang
2VietnameseNha TrangWhite House
3EnglishWhite HouseThe official home and workplace of the President of the United States of America
Every word from English White HouseEvery word from Vietnamese Nha TrangEvery word from English Nha Trang