In everyday Chinese, 萨摩 is almost always the clipped form of 萨摩耶 (Samoyed dog) — a popular fluffy white breed. The older geographic meaning (Japan's Satsuma domain) now appears mainly in history books.
culture
Samoyeds are nicknamed 微笑天使 ("smiling angels") in Chinese dog-owner communities because of their upturned mouth line. The breed was a big social-media trend in China in the 2010s.