2. If the intensity is relatively strong, you can pinch pecans with two fingers, forefinger and thumb, and squeeze them hard at the same time.

3. If the strength is slightly smaller or the cracks in walnuts are smaller, you can try to put two walnuts together (the cracks in the two walnuts are opposite) and then squeeze them hard.

In this way, the crack of your walnut shell is bigger than before, and then you peel it off with the fingers of your left and right hands. At this time, you see two walnuts.

5. done.