What's the difference between sunny weather and sunny weather?

First, the difference of reference objects.

1, sunny: sunny and sunny.

2, the weather is fine: the weather is not cloudy or sunny.

Second, the emphasis is different.

1, Sunny weather: The key expression is that there is enough light and bright sunshine when the weather is sunny.

2, the weather is sunny: the key expression of sunny weather is that there is no fog and plenty of sunshine.

Third, the differences of citation usage.

1, the weather is fine: Bi Ye's love for Lugou Bridge: "Now, in the autumn sunshine, the sky is blue and the ground is clear."

2, the weather is fine: Yang Shuo's "Top of Mount Tai": "Wait until tomorrow morning, the clouds on the mountain really dissipate, but the sky is cloudy, who knows if it will suddenly clear up?"