Why is Zhaotong, Yunnan so cold?

Affected by geographical location. According to the official website of Yunnan Shaotong Meteorological Bureau: This place is located at the junction of the Yunling Plateau and the Sichuan Basin. Under the combined influence of the plateau vortex south branch trough and strong cold air, the weather is cold, and the weather in Zhaotong is cold. The main reason is affected by geographical location. Zhaotong has a significant geographical location and extremely complex terrain. It is easily affected by strong cold air all year round and has large temperature differences.