The Ming mandarin who helped, 400 years later, to start the Cultural Revolution.

The most successful military commander of the mid-to-late-Ming Dynasty.

The major Song Dynasty philosopher who began to formulate Neo-Confucianism.

The Daoist hermit who supposedly lived to 118 years old and profoundly influenced Confucian philosophy.

In recorded history, the Yellow River has flooded 1,593 times and changed course 26 times.