Hong Wu invaded the Mongols, fought them, defeated them, causing the Mongols to be driven out.
Hong Wu has just ended the Mongol Dynasty. He has become the ruler and built his palace in the new capital located in Beijing.
A lot of farmers moved their lives North to establish farms and plant and there were many potatoes and corn being produced. Farming was apart of most people's daily lives in China.
Gunpowder was discovered and brought to the empire. Then people began crafting firearms for the military to use in battle.
The Ming Dynasty had large and powerful ships to patrol the seas and set out many voyages. This led to the Ming's controlling the seas at the time.
An army of rebels raided Beijing and it eventually fell to the rebels. The leader of the rebels was a former Ming official and when the Ming's were finished, he took over as the ruler of the next dynasty/empire.