Emperor Yao
In 2220 BC during the reign of Emperor Yao 帝堯, Hui Lian 惠連 scored merits in harnessing river floods. Emperor Yao conferred on Hui Lian the title of Viscount 子 (but the nobility system of ancient China is still not clear) and the state of Can'hu 參胡 (in present-day region of Fenyang, Shanxi province). Emperor Yao renamed Can'hu as State of Huang, and bestowed on Hui Lian the surname Huang 黃 and the name "Yun" 雲. Hence, Hui Lian was also known as Huang Yun 黃雲 or Nan Lu 南陆. Hui Lian became the Progenitor of the Huang surname clan. During Western Zhou dynasty, the rulers of the Huang State was given the title of Duke 公. The descendants of Huang Yun (Hui Lian) ruled the Huang State of Shanxi until the early Spring and Autumn period (722 BC-481 BC) when it was conquered by the State of Jin.