On 971 years ago today, July 16, 1054 (June 9, 1054), the Eastern and Western churches broke up. On July 16, 1054, the church split between east and west, and the church was divided into two parts: Greek Orthodox in the east and Roman Catholic in the west. The chief cause of division is that the West values law, and the East values knowledge. The two sides also differ on theology. The West says that the Holy Spirit comes from the Father and the Son; The East says that the Holy Spirit came only from the Father. The protagonists who brought the final division were Pope Leo IX and Archbishop Michael? Seraliu, they both have strong personalities and are determined to achieve their respective goals. Serarius closed all Latin churches in Constantinople, abandoned all unleavened cakes, and ordered all Latin monasteries to adopt the rituals of the Greek Church. King Leo IX issued a serious protest, claiming that only Rome could accept the highest respect and obedience. He was willing to tolerate the Greek Church and let them have their own customs and practices, but the teachings of the Roman Church were unchangeable. The king held a mediation meeting at Fort Constantine in the hope of resolving their differences. However, the Pope's emissary was treated unkindly. Seralius deleted the Pope's name from the list mentioned by the masses during prayers and Mass. In retaliation, the Pope's emissary announced the abolition of Serarius and his followers on the altar of the Basilica of St. Sufia on July 16, 1054 A.D. Four days later, in the same place, Serarius made the same action, excommunicated the Pope and his followers. The great division between the Eastern and Western churches has finally occurred. Since then, the Eastern and Western churches have parted ways and gone their own ways. The possessions of the Greek Orthodox Church are generally Russia, the Balkans and the western corner of Asia. Roman Catholicism is in the rest of the country, while the main dependencies are southwestern Europe and southern America. - -Comment on Huang Jiaxue's "Church History": An event with such far-reaching impact was like a child's anger when it occurred.