云贵川

yún guì chuān

Yunnan, Guizhou and Sichuan

yún

abbr. for Yunnan Province 雲南省|云南省[Yun2 nan2 Sheng3]

guì

abbr. for Guizhou Province 貴州|贵州[Gui4 zhou1]

chuān

abbr. for Sichuan Province 四川[Si4 chuan1] in southwest China