Kunming quasi-static front, also known as Yunnan-Guizhou quasi-static front, is located in Yunnan-Guizhou Plateau.
Sources of cold air mass and warm air mass:
Most of the cold air that hits the southwest in winter comes from the Arctic Ocean, Barents Sea and Lake Kara, and a small part comes from the ocean surface south of Iceland. ?
The warm air mass mainly comes from the southwest warm and humid airflow (from the Indian Ocean to the north)
The characteristics of quasi-static front are: one side of the front is rainy and the other side is sunny.
Guiyang is located on the north side of Kunming quasi-static front, which is a rainy area, resulting in no sunny day in winter. However, due to the low latitude and high altitude in Kunming, the cold air in the north is blocked by the Yunnan-Guizhou Plateau and the climate is cool. In winter, Kunming is located on the side of quasi-static front in Kunming, and the weather is fine.
The picture below can be seen clearly.