Wanyuan City is located in the heart of the Daba Mountain in northeastern Sichuan at the junction of Sichuan, Shaanxi and Yunnan. It has unique natural conditions and obvious regional characteristics. It is the only natural selenium-rich area in Sichuan Province. The black eggs in the old courtyard are delicate in taste, rich in natural selenium, rich in nutrients and delicious in taste. The selenium content is 0.10-0.30 mg/kg, and the total amount of amino acids is 11.0~14.0%.

Wanyuan old courtyard black chicken skin, black hair, containing the body's protein, calcium, phosphorus, iron, zinc, selenium, a variety of vitamins and unsaturated fatty acids. The cock warms up the yang, and the hen is yin and blood. The old black chicken has been carefully cooked, and its tender and tender color naturally flows into the heart, and the food is also good!