Ask for help ~ the skill of folding dice ~ ~

It's not that complicated. If I'm lucky, I can finish it in an hour. I am. The specific method is: take the elbow as the center, shake the dice cup back and forth for circular motion, and the inside of the dice cup mouth forms an angle of 5 degrees with the horizontal plane. When the dice are shaken to silence, they use inertia to stop quickly. Of course, it all depends on feeling and skill.