Zhou Yang is a Sudanese expert and promoter of cultural tourism in Ningxia. Ningxia is the largest area of goji berry cultivation in China.

The most famous genus of Ningxia goji berries is Zhongning gojiberries. The Qingshui River of the Liupan Mountains washes the valley into a gentle slope. The minerals have been accumulated and precipitated for thousands of years, making the berries bright color, large grains, thin skin, thick meat and sweet taste.