It is common knowledge that Christianity, Catholicism, and the Eastern Orthodox Church are all religions that believe in the Lord Jesus Christ. The Church of Almighty God came into being because of the appearance and work of Christ of the last days. The Church of Almighty God is the church of Christ in the Age of Kingdom, and it is also a part of Christianity. So why does the Chinese Communist Party deny that The Church of Almighty God is a Christian church? What really is Christianity?