Belgium
Purpose: The significance of Chen Di is that he opened up a new path for the study of ancient Chinese phonology and was the founder of ancient phonology. His ancient phonetic thought of "there are ancient and modern times, north and south of the land, changes in characters, and changes in pronunciation" has epoch-making significance. It completely negates the traditional "leaf rhyme" theory and allows people to begin to look at the ancient and modern differences in pronunciation from the perspective of development and change.
In addition, Chen Di was also a patriotic general and poet in the late Ming Dynasty. His life stories were rich and colorful, showing his talent for both civil and military affairs and his ambition to pursue mountains and rivers. He also has outstanding achievements and contributions in military, travel, book collection and other aspects. Therefore, it can be said that Chen Di is a versatile and far-reaching historical figure.