The whole poem is cleverly conceived, with the theme of farewell without hurting others, and it is displayed from different angles around this theme.
Although the angles are different, we keep our different opinions and friendship everywhere. There is no sadness, only optimism, no childlike attachment, only sincere encouragement. Sweeping away the melancholy and sadness of general farewell poems truly reflects the spiritual realm of people in the early Tang Dynasty.
"However, when China has our friendship, heaven is still our neighbor" has also become a famous sentence to express profound friendship.