Founded by Zhu, the Ming dynasty first established its capital at Nanjing and revived the characteristically Chinese civilization of the Tang and the Song. Chinese power was reasserted in China and throughout East Asia. Civil government was re-established. Literature was patronized, schools were founded, and the administration of justice was reformed. The Great Wall was extended and the Grand Canal improved. The empire was divided into 15 provinces, most of which still bear their original names. Each province was supervised by three commissioners—one for finances, one for military affairs, and one for judicial matters.