This poem is full of scenery, and there are characters in it. There are sentimental feelings between the lines, hiding warm and touching things. The third sentence is the key sentence to reveal the whole poem. It's already "late at night" and "in the misty rain", and no one will play for the swing. And why did the poet have special feelings for Qiu Qiansuo hanging there and choose it as the object of description? The poet seems to have been held by "hands", and he can't help but think of the scene of swinging during the day and the people who swing.
(The subjective meaning is correct)