1. Semantic difference: The phrase "warm Yang Yang" is used to describe sunny and warm weather or sunshine. The phrase warmth is used to describe the feeling of warmth or the temperature on the surface of an object.
2. The brightness and warmth of the warm sunshine in Yang Yang give people a feeling of comfort and warmth. It can be said that the weather in Yang Yang is really warm today, which means it is sunny and warm today. The warmth of things gives people a warm and comfortable feeling. It can be said that I drank a cup of warm hot chocolate.