Rice is a food closely related to people’s lives. Pay attention to the following issues when buying rice: 1. Look at the hardness: the hardness of rice grains is determined by the content of protein. The stronger the hardness of the rice, the higher the protein content and the better the transparency. Generally, new rice is harder than old rice, low-moisture rice is harder than high-moisture rice, and late indica (japonica) rice is harder than early indica (japonica) rice.