Who knows how magical Liu Qian's hand through the glass is in the Spring Festival Evening of the Year of the Tiger?

First of all, the glass facing the audience on the table is single-layered, and other places are double-layered:

As shown in the figure below, light is the reflection of a single light bulb on a single glass.

And when the light and shadow moved, the glass appeared.

Double image

Explain that the glass behind is double-layered, the upper layer is fixed, and the lower layer is facing the glass of the audience.

Liancheng

Integrated and slidable.

The glass hole is located in the position shown below. This position is also double glass, and the hole is in the lower glass.

When the camera takes a close-up of dirty hands, the lower glass is slid clockwise by the rear bracket. .

In this way, the hole will be in Liu Qian's left hand position. At the same time, pay attention to the paper towel, there is lubricant on the paper towel! The role of lubricant is to cooperate with the "support" after the hand is pulled out, which will be mentioned later! !

Everyone clearly saw the movement of the hole when the hand was inserted! Push this hole with your left hand,