What monsoon will affect Yunnan-Guizhou Plateau, and the quasi-static front will be completed?

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. This deep cold air generally accumulates in northern Siberia and Mongolia first, which strengthens the cold high pressure on the mainland. When the strong fluctuation of westerly belt pushes eastward, it will often break the low-level continental high, leading to the outbreak of cold air to the south. The main path of cold air affecting southwest China is from Siberia to Xinjiang; Blocked by the large terrain of the Qinghai-Tibet Plateau, it flows around the plateau, crosses the Hexi Corridor, crosses the Qinling Mountains, enters the south of the Sichuan Basin, and then climbs the Yunnan Plateau and the northeast of the Guizhou Plateau along the east side of Daliangshan Mountain. Due to the blocking of a series of mountains on the Yunnan-Guizhou Plateau, the cold air gradually quieted down, that is, it changed from a cold front to a quasi-static front, which is the famous quasi-static front in Kunming.