What's the weather like in Changsha on National Day?

According to the forecast of the Central Meteorological Observatory, from 28th to 30th, North China, Northeast China, Huanghuai and other places will be affected by a strong cold air, and there will be strong winds and cool weather, during which it will turn into a trough. The first frost will appear in northern North China and most parts of Northeast China. During the period, it was rainy in the eastern part of southwest China and Jianghuai area.