1, content difference: Bie Dongda mainly describes the parting scene between the poet and his friend Dongda, and expresses his sadness at parting; On the other hand, "Sending Yuan to Xi 'an" depicts the scene that the emissary left his hometown, crossed the desert and went to a foreign country in the form of farewell, expressing his thoughts for friends far away.
2. Style differences: "Don't move big" is lyrical in scenery, sincere in feelings, simple and simple in verse, which conforms to the characteristics of Tang poetry; On the other hand, Song and Yuan made Anxi pay more attention to the description of scenery, which reflected the poet's literary attainments and cultural details. Poetry is gorgeous and rhythmic, which is more unique than the style of Tang poetry.
3. Meaning difference: Although the theme of Don't Move Big is parting, it expresses friendship and emphasizes the importance of interpersonal relationships. However, "Two Ambassadors Anxi" more embodies China's attention to the Silk Road and its exploration of western culture in ancient times, which has far-reaching historical significance and cultural value.