Which are coarse grains, which are flour and rice, which are foods containing crude fiber, and which vegetables are nutritious in winter?

Coarse grains are the food products of flour and rice that we usually eat, such as polished rice and white flour, which mainly include:

Cereals: corn, millet, Redmi, black rice, purple rice, sorghum, barley, oats, buckwheat/wheat bran, etc.

Miscellaneous beans: soybeans, mung beans, red beans, black beans, mung beans, kidney beans, broad beans, peas, etc.

Tubers: sweet potato, yam, potato, etc.

Flour and rice refer to white flour and rice.