tìhn choi
滇 is an abbreviation for Yunnan (it's a lake in the province), 菜 is vegetables but also more generally type of dish or cuisine, so 滇菜 is Yunnan cuisine or Dian cuisine.
Yunnan cuisine, is the food of Yunnan province.
Beijing cuisine
Cantonese cuisine
Chaozhou cuisine
Fujian cuisine
Hunan cuisine