The Ly Dynasty, which lasted for a long time for the first time in Vietnam's history, moved its Capital City to Tanglong immediately after the founding, the central city of the Red River Delta, which was greatly influenced by Chinese culture. The Ly Dynasty was established with the enthusiastic support of the Buddhist faction. For this reason, the Ly Dynasty built Buddhist temples in key locations in the capital and actively encouraged Buddhist rituals. When there were important political or imperial events of the state, Buddhist ceremonies were held at the central square of the palace under the leadership of the government and the imperial family. The government of the Ly Dynasty strengthened its control over the provinces while simultaneously suppressing and embracing. While actively promoting military expeditions and innovation of the governing system, the government accepted regional rites with strong folk religious characteristics as part of State Ritual. In particular, God of the Mount Donggo(銅鼓山神) rite, held in the central square of the palace, became a State Ritual in which local powers pledged their allegiance to the emperor regularly. The Ly Dynasty built a rectangular Chinese-style castle town in Tanglong, and the basic structure of the city and the names of the buildings also imitated the Chinese-style palace. The State Rituals held in and around the palace were also focused on Buddhist rituals in the beginning, but gradually the traditional rituals of the Tang-Song Period capital were selectively accepted and utilized. Imperial Ancestral Temple was used as a triumphal rite by the emperor to offer prisoners after military expeditions. The birthday of the emperor was used as a ceremony to enhance the power of the emperor through a banquet and awards held in the central square of the palace. Agricultural ritual was the rites that the emperors of the Ly Dynasty showed the most active interest among the traditional State Rituals. Emperors actively participated in sowing and harvesting ceremonies, encouraged agricultural production and expressed interest in the lives of the people. After King Injong period, the civil service examinations began, albeit in a limited way, and Confucius Temple, which offered sacrifices to Confucian gods, was also established in the capital. Although Buddhism still had a great influence as a governing ideology during the Ly Dynasty, but a new change was emerging in the State Rituals held in the Capital Tanglong, gradually becoming Confucian-based.