What are the rules of the game of "grasping stones"?

Game play: Grab all eight stones (or small sandbags made of cloth) with one hand and throw them up. At this time, the palm of your hand is quickly turned over, so that a stone falls on the back of your hand (if there are many stones on the back of your hand, shake off other stones to the ground;

There is only one stone left on the back of your hand), and then throw the stone up with the back of your hand. At this time, turn the back of your hand over quickly, and then throw the stone up with your palm. Before the thrown stone falls on the table, grab a stone on the table, and then catch the stone just thrown up (you can't touch other stones on the table when grabbing stones);

At this time, you have two stones in your hand. Put one in the other hand. According to this method, you can catch two stones at a time, three stones at a time and the last stone (the order of catching stones is 1, 2, 3, 1). After success, the game wins.

A similar game: Galahad the Sheep.

Four lambs are a pair. Be good at playing three or four decks at a time. To play galaha, you need a pair of galaha with pockets. Garaha is a hexahedron (all animals are the same), so it is abandoned because its two sharp corners have unstable centers of gravity. The front looks like a belly button called "pit", the back looks like a fat belly called "back" (belly), the side looks like a human ear called "wheel", and the other side looks like nothing but "truth".

Vigha counting is in Arabic numerals: a pair of pits is ten, three pits are fifteen, four pits are twenty, four samples are five, and so on. Grab a hundred and turn the truth, the wheel, the pit and the stomach respectively; Grab four samples, throw the back of your hand in the air, turn it over, and win if you don't drop one.