Grains and rice are not only staple foods, they are the foundation of the food pyramid and are eaten in the largest quantity. These foods are a source of fiber, and complex carbohydrates that supply energy. They're also quite filling. While Westerners consider protein the essential food on their plate, for Asians it's the rice or grain. They will typically place a large amount of rice or grain in the center of their plate, then put very small portions, no more than about a quarter of a cup, of several flavorful concoctions around the perimeter.
Vegetables are next, following the grains.
Soy based foods, beans and legumes are the major source of protein, along with additional complex carbohydrates and even more fiber. In fact, Asians consume more than three times the fiber that we do. Vegetable oils are at the top of the Asian Diet Pyramid. These oils, predominantly peanut and soy, are used sparingly. Contrary to what you may believe, the oil is not used to cook the vegetables.