According to the first article revealed, the secret of magic lies in that iron blocks are put in the stomachs of several goldfish in advance, and magnets are installed under the water tray. Because the water in the tray is very shallow, the actors can direct the fish to travel in the water by controlling the switch of the magnets. Once the magnets are turned off, the fish can swim freely.

Netizens who hold this view also said that after being "treated" in this way, the fish can only live for five to seven days, and Fu Yandong is cruelty to animals.

● Analysis: The biggest difficulty in the actual operation of this kind of "revealing the secret" lies in how to put enough iron into the goldfish's stomach.

If you don't use manpower, it is impossible for goldfish to swallow metal actively. Instead, it is too difficult to perform "surgery" by first disembowelling the goldfish and implanting iron blocks, and then sewing them intact, and ensuring their health for a period of time.

In fact, foreign countries did have the magic of putting metal into fish, but because it was too cruel to fish, the International Federation of Magic Organizations banned this magic in 2003, and it was impossible to buy fish with metal in their bodies through formal channels.

In addition, some netizens pointed out that even if iron blocks can be placed, it is difficult to ensure that goldfish are "neatly lined up" almost exactly by manually manipulating magnets. A little error will destroy the "formation" of goldfish.

Secret 2: the theory of luring fish

A netizen who claimed to have played magic for more than ten years drew a sketch, saying that this magic is to lure goldfish to swim by using fishing line and fish food through the magician's assistant hidden in the ceiling, and that this operation "needs to be very skilled".

● Analysis: Not to mention whether it is possible to hide a person on the ceiling of the Spring Festival Evening Studio. Even if it is possible, it is extremely absurd to use a fishing line to lure fish with the naked eye at a distance of more than ten meters. This is more likely to cause the "fish team" to be deformed due to errors than the "fish abuse theory".

Secret 3: electric fish said

Some netizens explained the secret of fish training from a biological point of view.

In a certain intensity of direct current field, the fish will turn to the anode and swim to the anode after being stimulated by current. When the current direction is switched, the fish will also turn around and turn its body to the anode again. In the alternating current field, the fish schools stagnate.

This directional electrosensory response of fish to electric stimulation is called "yang-oriented response", which is completely an instinctive response of fish to reduce the pain caused by electric shock. By controlling the current, the magician enables goldfish to "understand" the magician's password.

● Analysis: This characteristic is often used in fishing operations in fishery production, which shows that fish do have this magical characteristic. In Fu Yandong's magic, it is not difficult for a magician to quietly manipulate the current flow. As long as he practices hard and masters the adjustment of current intensity, he can make the fish "obedient". Relatively speaking, this method is feasible.