Chuong wang, or huang ark is a special breed of ducks with red face. Their feathers can be all white or green and black. Most of them can grow up to 5 or 6 kg.
They make good soups and are also used to make the famous Soy sauce braised duck or Pah Lo duck by the Hakkas and Cantonese.
The Foochows love Duck Soup, Duck Essence or 8 Treasure Duck Soup.
It is a very nutritious protein.