Liu Bang was the founder of the Han Dynasty in ancient China, which lasted from 206 BCE to 220 CE. Born a peasant, he rose to power during the Qin Dynasty's collapse, leading a rebellion against the harsh rule of the Qin. Liu Bang's leadership and military skills helped him defeat rival warlords, ultimately establishing himself as the emperor. As emperor, Liu Bang, also known as Emperor Gaozu, implemented policies that favored the common people and reduced the harsh laws of the Qin. His reign marked the beginning of a prosperous era in Chinese history, characterized by economic growth and cultural development.