Emperor Gaozu of Han
Emperor Gaozu of Han (; 256 BCE – 1 June 195 BCE), born Liu Bang (劉邦), was the founder and first emperor of the Han dynasty, reigning from 202 – 195 BCE. He was one of the few dynasty founders in Chinese history who was born in a peasant family.
Foreign relations of imperial China
The time of the Han dynasty (202 BC–AD 220) was a groundbreaking era in the history of Imperial China's foreign relations, during the long reign of Emperor Wu of Han (r. 141–87 BC), the travels of the diplomat Zhang Qian opened up China's relations with many different Asian territories for the first time. While traveling to the Western Regions in order to seek out an alliance with the Yuezhi against the Xiongnu, Zhang Qian was imprisoned by the Xiongnu for many years, but he brought back detailed reports of lands that had been previously unknown to the Chinese. This included details of his travels to the Greek-Hellenized kingdoms of Fergana (Dayuan) and the Greco-Bactrian Kingdom (Daxia), as well as reports of Anxi (Persian Empire of Parthia), Tiaozhi (Mesopotamia), Shendu (India), and the Wusun Central Asian nomads. After his travels, the famous land trading route of the Silk Road leading from China to the Roman Empire was established. Emperor Wu was also known for his conquests and successful campaigns against the Xiongnu. He warred against the Kingdom of Wiman Joseon in order to establish the Four Commanderies of Han in Manchuria, one of which was established in northern Korea, the Lelang Commandery. The empire began expanding into southern China and northern Vietnam, then the territory of the Baiyue kingdoms. The Han Empire absorbed Minyue after defeating the state, and annexed the Dian in Yunnan. By 111 BC, Emperor Wu conquered the Nanyue kingdom in the Han–Nanyue War. Nanyue was ruled by the Triệu dynasty since the Qin naval officer Zhao Tuo had broken ties with mainland rule in the fall of Qin and establishment of Han.