China fell into a fierce war of Han So civil war. Social distancing greetings 6ft poster. Four years later, Liu Bang defeated Xiang Yu and founded the Han Dynasty. At that time, Trieu Da took the Au Lac country, renamed the country Nam Viet, but was independent, but still admired the Han Dynasty on the surface. The Trieu family has been king for nearly a hundred years. In 111 BC, Han Vu De sent Lo Uncle Duc to bring troops to attack Vietnam, the Trieu army lost, and Vietnam began to sink in nearly a thousand years under the North.