November to December. According to the Jiuzhou Zui Catering Network's query, China's barley rice industry development report shows that the main production areas of barley are in Northeast China and North China. The fruiting period of barley is from September to October, and new barley is on the market from November to December. Coix, also known as coix, barley, and barley, is a commonly used traditional Chinese medicine and a commonly eaten food. It has a sweet and slightly cold nature and taste. It can induce diuresis and reduce swelling, strengthen the spleen and remove dampness, relax muscles and relieve paralysis.