Yelubaoji (872 -926) was an emperor in the late Tang Dynasty of the Five Dynasties, and his main contributions were: 1. It promoted the unification of the late Tang Dynasty: after Yeluboji ascended the throne in the middle of the late Tang Dynasty, he strengthened his control over the central government, strengthened his rule and campaigns in various places, and promoted the integration of military politics. 2. Reforming the national political system: Lu Ye Baoji implemented some political system reforms, raised the standards for selecting officials, and established the cronyism and centralization of authority, thus strengthening centralization of authority. 3. Strengthen cultural education: Lu Ye Abaoji attaches great importance to cultural education, promulgates laws and regulations of the Tang Dynasty, and strengthens the system of "Nine Grades" to make the leadership more clear about its responsibilities. 4. Promote social and economic development: Yeluboji has implemented some trade and agricultural policies, opened up market trade, improved the value of commodities, and played a certain role in promoting the country's economic development. In a word, The Book of Yelubaoji promoted the unification and reform of the country, strengthened the central power and promoted the social and economic development in the history of the later Tang Dynasty, which was of great significance to the history of the Five Dynasties.