What continued to be a valued part of Chinese culture after the Han dynasty’s fall

That would be the elaborate sculpture.

Explanation:

Chinese culture during Han dynasty but also in the period after was very developed and one of the main features was the elaborate sculpture. They used different techniques and materials, among them mostly bronze. The most famous feature for this period were probably jade burial suits, that were used as a part of Chinese culture for a long period of time.

b

explanation:

its many islands, high mountains, and remote peninsulas isolated population centers.