Excuse me, under what background was Gu Cheng's poem & gt written? What's the theme?

The poem Far and Near is the poet's essential discovery of abnormal life. When this poem was first published, it was considered as a strange poem that was difficult to understand. According to the rigid reading mode at that time, people have become accustomed to the passive thinking mode, and this poem is really difficult to interpret. Because the distance between you and me can't be far beyond the distance between you and the cloud. But why does the poet feel that "when you look at me, it is far away, and when you look at the clouds, it is very close"? The reason is that the poet wrote about an abnormal life and a distorted interpersonal relationship. In this twisted relationship, everything is upside down. The relationship between people who should be close is alienated by the barrier of the soul, which seems so lonely and inaccessible; Because of the alienation of interpersonal relationship, man and nature have narrowed the distance and become very close. Perhaps, it is precisely because of the closeness between man and nature that man's loneliness is further manifested; Perhaps it is this loneliness that often reminds Gu Cheng of the kingdom of dreams. But Gu Cheng should know that in this world full of contradictions, the dream kingdom of heaven does not exist.