(1) The frontier poems in the early Tang Dynasty conveyed the desire for fame, but lacked the social desire in the frontier poems in the prosperous Tang Dynasty.
The four outstanding figures in the early Tang Dynasty were intellectuals of the new era who developed in the period of Emperor Gaozong and Wu Zetian. They are all brilliant, ambitious and ambitious. Their frontier poems are full of strong desire for fame, hoping to gain the reuse of the monarch in order to reach the Qing court. Many frontier poems created by them contain such emotional expressions. For example, Yang Jiong wrote in Join the Army that "it is better to be a poet than a centurion." In Difficult to Join the Army, King Robin stated that "Wan Li was driven to Qilian, and the martial arts of III were announced".
The frontier poems in the prosperous Tang Dynasty not only concealed the strong desire for fame and fortune, but also expressed the noble social desire, embodied the willingness to share weal and woe with the common people, and embodied a strong sense of social responsibility. This kind of poetry appeared in many new works in the prosperous Tang Dynasty, such as Wang Changling's "Dragon City will fly, don't teach Huma to cross the shady mountain" in "Out of the Great Wall".
(2) The frontier poems in the early Tang Dynasty conveyed the war-torn environment, without the optimistic and romantic artistic conception of frontier poems in the prosperous Tang Dynasty.
Frontier poems in the early Tang Dynasty mainly described the hardships and helplessness in the war, creating a tragic situation. Rulu wrote in "Journey to the Juvenile Field" that "a bonfire is like a bright moon at night, and soldiers know it". It expresses the humbleness of people's lives during the war. In the prosperous Tang Dynasty, the emotional narration in frontier fortress poems gradually developed in an optimistic and romantic direction. Although the frontier wars were frequent in the prosperous Tang Dynasty, the people lived in dire straits, but the frontier poems in the prosperous Tang Dynasty conveyed more positive energy to encourage soldiers to fight bravely against the enemy, and set up the majestic momentum of Tang Jun, so that people could, as Gao Shi wrote in the frontier poem Song of Xia Sai, "The sun stays in the frost and the moon hangs a bow." Qinghai is in the clouds, and Montenegro is rushing. "
(3) The style of frontier poems in the early Tang Dynasty was bohemian, without the rich and elegant feeling of frontier poems in the prosperous Tang Dynasty.
In the early Tang Dynasty, due to the early establishment of the Tang Dynasty, the poet showed his great achievements in frontier poems incisively and vividly, which reduced the influence of the old social life on the poet's creation, allowed the poet to create freely with his own state of mind, and told his dissatisfaction with the society fearlessly, and guided the poetry of the Tang Dynasty to gradually move towards a vigorous and heroic creative style. After entering the prosperous Tang Dynasty, there have been many bohemian poetic styles, but compared with frontier poems in the early Tang Dynasty, the sentences contain more richness and beauty, the overall artistic conception structure has made obvious progress, and the words are more refined and accurate.