Today's yellow reflects tomorrow's weather.

Generally, the sky is dark yellow, orange, red, purple and so on. So there will be storms, thunderstorms and even strong winds in the next few days.

In the past, fishermen and farmers relied on these observations to predict the weather, but modern people apply these experiences to outdoor activities.

Such as hiking, cycling, water sports, etc. , not only rely on the observatory's forecast, but also based on these ancient experiences to speculate.

It is indeed some intangible cultural heritage.