What is the difference between emotion and emotional tone in poetry? What is the difference between the theme and the main content of poetry?

The emotion of poetry refers to the thoughts and feelings that the poet wants to express, and the emotional tone refers to which type his thoughts and feelings belong to. For example, in Li Bai's Silent Night Thinking, the emotion is homesickness and the emotional tone is sadness. Another example is Li Bai's Looking at Lushan Waterfall, whose thoughts and feelings are praise for Lushan Waterfall and the great rivers and mountains of the motherland, and its emotional tone is joy and admiration.

The theme of the poem is indeed what the author wants to express, as the landlord said, but the theme is not equal to the main content. Let's take Li Bai's Thoughts on a Quiet Night as an example. Its main purpose is to miss home, and its main content is to look down at the moonlight in front of the bed and miss home. The main purpose of Wanglushan Waterfall is to praise the great rivers and mountains of the motherland, and its main content is to show that the waterfall has a large drop and is magnificent.

Can you understand? I hope it helps you.