Open at the bottom. Pan Pan sugar-free high-fiber coarse grain biscuits, the box opened at the bottom, are delicious coarse grain biscuits. Compared with polished rice and flour and rice that we usually eat, coarse grains mainly include corn, purple rice, sorghum, oats, buckwheat, wheat bran and various dried beans, such as soybeans, mung beans, red beans and mung beans.