Introduction to "Correct Heart, Sincerity, Self-cultivation": Entering the temple from the main entrance, the first thing that catches the eye is the back wall of the worship hall. In the center of the back wall, there are six characters of "Correct Heart, Sincerity, Self-cultivation" in regular script, which is the symbol of the Republic of China. During this period, Suiyuan capital was written by Ma Fuxiang. Above the six-character regular script, there is the inscription "Recognize God as One", which expresses the unique knowledge of Islam in understanding God.