How did Liu Qian put his hand through the plexiglass?

It is actually not a magical thing for the arm to go through the glass. The magic looks magical, but it is actually a deception. The key to this is the props. The glass is double-layered, so when you see things, there will be a visual gap. Moreover, keeping your left hand on the glass prevents you from seeing the reflection, so you can see through it. In addition, it can also be achieved by causing a local gap through the lateral movement of the glass. Very easy. It's better to make the glass behind your hand into a drawer. It will be very hard when you close it, and you can hold it freely when you open it, as long as it can block your view. However, looking at Liu Qian's magic trick, in order to be foolproof, it should be visually manipulated with props. The double-layer glass makes it difficult for you to see whether it is a phantom or real.

In fact, revealing the secrets of magic is not interesting. As long as everyone is happy. But to be honest, even if everyone knows the trick, Liu Qian's technique is very skillful, which is something that ordinary people cannot achieve without practicing for several years.