The dragon is one of the most important elements of Chinese culture, and the search for what a dragon is needs to start with Fuxi, the first ancestor of Chinese humanities. The noon sun shadow histogram represents the return of the sun to the Tao, is a visual image of the Heavenly Time and Heavenly Dao.
The dragon is the Dragon of Time, and so the legendary dragon is also known as theDragon of Time. The word "Fuxi" is also the same as Shennong Xuanyuan's name.