What are the terms used in weather forecast?

In the weather forecast, some forecasting terms such as "sunny", "partly cloudy", "cloudy" and "cloudy" all have their specific meanings. The meteorological department of our country stipulates these terms as follows:

There are no clouds or scattered clouds in the sky, but the amount of clouds is less than the sky area110, which is called "sunny". Sometimes there are thin high clouds in the sky, but they are also called "sunny".

It is called "partial cloudy" when the cloud amount of low and medium clouds accounts for11310 or the cloud amount of high clouds accounts for 4/15/10 of the sky area.

It is called "cloudy" when the middle and low cloud cover accounts for 4/ 10 ~ 7/ 10 or the high cloud cover accounts for 6/ 10 of the sky area. Where the middle and low cloud cover more than 8/ 10 of the sky area, it is called "cloudy day" if the sunlight cannot penetrate or rarely penetrates the clouds.