Wiman Choson  衛滿朝鮮

Like Chi-tzu, Wei Man or Wiman, a former subject of Yan, was an exile from China. Chi Chun, the ruler of Wiman at that time, trusted the Chinese exile and awarded him a post of great importance only to be betrayed and driven off the throne. Wei Man became the ruler of Wiman Choson but his descendants ruled for only three generations-less than 100 years-before their kingdom was  conquered by Wu-ti, the great Emperor of Han China. In 109 B.C. emperor Wu-ti of the Han Dynastysent land and sea forces to capture Wang-chien-cheng, the captial of Wiman near presant day Pyongyang .

Jin

Around this time, a state called Jin arose in the southern part of the Korean peninsula. Very little is known about Jin, but it established relations with Han China and exported artifacts to the Yayoi of Japan.A king of Gija Joseon may have fled to Jin after a coup by Wiman. Jin later evolved into the Samhan confederacies.