The literal translation of this sentence may be somewhat different, but it can be roughly understood as:
Adults (such as tigers) change and have brilliant literary talents. The change of a gentleman (like a leopard) is rich in literary talent and beautiful. Little people (like faces) change, obey kings and follow adults.
The significance of this sentence may be to emphasize the performance and attitude of different roles in the process of change. Adults and gentlemen show unique qualities and abilities in change, while villains show more follow and obedience. This may mean that in this era of change, the situation and attitudes of different roles have an important impact on the growth and development of individuals and society.