Virtue consists of "mind", "fear" and "straightness". "Heart" is related to modality and tone; "Anger" is related to walking and behavior; The original words "straight" and "value" have the same meaning when they meet.
In ancient times, there were several ways to write "Xian Ai".
For example, the word "De" in the Imperial Book of Emperor Kangxi of the Qing Dynasty, which is now located in the Confucius Temple in imperial academy, Beijing, is not horizontal; Another example is the word "De" written by Zheng Banqiao, a painter in the Qing Dynasty who founded Quanjude at the same time. Some of them have horizontal lines, while others have no horizontal lines.