There are two coins. One is hidden in the bottom of the cup. Of course we can't see it. The coin was not signed when it fell. Then I switched the bag. There are two transparent glasses on the table, both of which are buckled on the table, and the glasses are covered with "paper sleeves", so that people can't see the inside of the glasses for the time being. One is on the left and the other is on the right. There is about a foot between the two cups. )

You pick up the cup on the left, put a coin (regardless of size) where you put the cup, and then cover it with the cup in your hand.

You gently blow a breath into this cup, or make a mysterious gesture, and then slowly lift its "paper sleeve". Because the glass is transparent, the audience can clearly see that the coins inside are gone!

At this time, you open the paper sleeve of another glass, and the lost coin has become this glass!

You put back the paper lids of both cups and breathe gently. Strangely, when you took both cups away, the coin mysteriously changed back to its original position.

Preparation before the performance:

You prepare two transparent glasses first, not too small. Prepare another piece of black paper half the size of a newspaper. In fact, any color is ok, as long as there is no "pattern" on it, but it can't be too thin. First, you use the same paper, cut out two disks, the size of which should be the same as the cup mouth. Then stick it on each cup with "glue". The difference is that a coin (let's assume it's a one-dollar coin) must be attached to one of the disks first.

Then make two "cylinders" that can cover the cup with other colors of paper. The cylinders are higher than the cup itself, and the upper edges should be glued together, so that others can't see the cup from above. Then spread that piece of "half a newspaper's size" black paper on the desktop, and then put two cups with paper sleeves within the range of the black paper, and all the preparations are completed. Then I put a coin of 10 yuan in my pocket, which is similar to that in the "cup". With a little practice, you can perform.

How to implement:

The first step is to pick up the "cup cover" on the left and let the audience have a look. There is nothing else in the cup (in fact, there is a round piece of paper at the mouth of the cup, just because it is black and the audience can't see it).

Put the lid back, and this time take the cup with the lid. Note: the audience should not see the "bottom" part.

Take out 10 yuan's coins from your pocket and put them where you put the cups. Cover the coin with the cup and sleeve in your hand.

You breathe gently into the lid, or make a mysterious gesture.

Slowly lift the "lid" by hand, and the audience will immediately find that the coin of 10 is gone! (Because there is a black round paper covering the coin, it is of course invisible. )

You lift the "paper sleeve" of another cup with your other hand. 10 yuan's coin has arrived! Actually, it's in a cup, remember? )

Put the two paper sleeves back on the original cups. You breathe into the cup again.

First lift the "cup cover" on the right, pick it up and put it aside. The audience immediately found that the coin of 10 was gone again! (Because coins are stuck on black paper, as soon as the cup is removed, of course, it will go with the cup. )

Remove the "cup sleeve" on the left, and the 10 coin will return to its original position.

3. Decryption: As you can see from TV, the plate that picked out the eggs was taken out from the table. The bottom of this plate is dark blue, not because the glass is thick, but because there is a layer of blue paste. Liu Qian put the ring in the paste when he took the plate, because the paste was opaque, so others could not see the ring in the paste. After the eggs were beaten in, Liu Qian took out the ring from the paste.