Generally speaking, shuffling cards in public is just a way to show fairness. If you shuffle the cards neatly and fold the cards, most opponents will believe you and will not "speculate".
Four people play, how to shuffle?
After the cards are opened, the cards on the table are concentrated and arranged in three ways. Generally, there are more snake (straight) tiger road and straight flush cards behind each house. If you want to get four or flush cards in a round, you should pay attention to whether you have or have any better conditions before opening the cards, such as getting four cards, and you already have a tiger road in this round, and then holding a card that is the same as your blue card on the card opened by another company is the secret of four cards. If you have four flush cards in sequence, it is a flush to get a suitable card in another house. If you are not as good as the cards dealt by others, take the cards of others as the basic cards. This trick is very simple. First, put the cards you want together (preferably by hand) when you collect them. Collect them at the bottom of the pile. In order to prevent others from seeing the cards intentionally or unintentionally and having doubts after learning the results, it is best to have a miscellaneous card at the bottom. Pick up the remaining cards in your left hand, and then fold the cards in your hand. Collision between the card board and the card stack, or drop one side of the card on the table and flatten and compact the other three sides with your fingers. The purpose is to make the cards stacked by the left and right hands very neat. This action can't be ignored, and you can't do it if the cards are stacked incorrectly. Then there is a formal reshuffle. There are many kinds of movements and postures in playing cards. Among them, the most common ones are the inward bending card and the outward bending card, which one are you used to? Put the cards in the outer bend, then put three cards in the right hand, then put one in the left hand, then put one in the left hand and three pieces of tea in the right hand to lose weight.
Play cards according to this rule until you play four or five cards together. After washing the cards, you can continue to board the cards, and you can only fold the first half. If you draw a part (not less than 20 cards) from the bottom, you must use this technology to put it back. There are two ways. One is to draw a board on the bottom and put it on another stack of cards. Move forward or backward a little, like this
Second, when the bottom stack of cards is pulled out and placed on another stack of cards, press the bottom stack of cards with the middle finger of the left hand to separate the two stacks slightly, as shown in the figure:
If the bottom card is not 2, 6, 10, then the number of cards put by the left and right hands for the first time will be different when shuffling. If it's 3%7, J, the order of cards is left and right. Then the same as above. If it's 4, 8, Q, it's left one, right two, and then the same as above. If it is 1, 5, 9, k, it is left one and right three, and then the same as above.