What's the difference between big and small coix seed? What is the difference in efficacy? Don't copy, please talk to an expert. Please, great gods

coix seed, also known as coix seed, is a commonly used Chinese medicine and a common and frequently eaten food. It is sweet and slightly cold in nature, which is beneficial to reducing swelling, invigorating spleen and eliminating dampness, relaxing muscles and tendons, clearing heat and expelling pus, and is a commonly used diuretic and dampness-permeable medicine. It is suggested that pharmacies and grain stores have the same function, and there is no difference in size, but you should smell it when you buy it, and don't buy it if it smells moldy.