Thanks to the state of spiritual purity they achieved and their concentration on the ancestors, they were able to visualize the ancestors clearly during the ceremony. This is why in the Analects it is said that Confucius sacrificed to the dead as if the dead were present and to the spirits as if they were present.
由於心靈達到極度澄明的狀態，也因為專心思念先人的志趣行為，使得祭祀之時，先人的神情笑貌，歷歷如在目前。