Why is there no signature on the map of Taoyuan Wonderland in Chou Ying in Ming Dynasty?

The reason why Taoyuan Map of Chou Ying in Ming Dynasty has no signature is because as a picture scroll, the author wants to keep the dignity of the picture scroll at the highest level.

1. The Taoyuan map of Chou Ying in the Ming Dynasty is a scroll, which belongs to the category of China's traditional calligraphy inscriptions. In many traditional calligraphy, it is common that there is no inscription.

2. On the other hand, even if the inscription is added, it will only elevate the scroll to the level of the author's works, but not to the level of the formal painting and calligraphy collection. Therefore, the author did not add any inscriptions to keep the scroll above the highest level.