What is the solution to the 2022 Spring Festival Gala's magic "Welcome the Spring Festival"? How?

In the first magic trick, the state of the Rubik's Cube is carefully designed (there are only 4 steps to the restoration, so it can be restored quickly through tricks)

The second magic trick is shown by the magician. During the process, the state of the Rubik's Cube has changed (the lens shows a changing "illegal" state), and it has become the messed-up state of the 4 steps in the first magic:

This Rubik's Cube is red. There are two central blocks and two green blocks in one corner. Such a state cannot be produced by rotation. The "fourth side" of the Rubik's Cube on the right has actually changed

For the third magic trick, the Rubik's Cube state is still the 4-step state used in the first magic trick (so that it can be restored quickly).

I guess that after the magician restores the Rubik's Cube himself and finds a way to prevent the audience from turning the Rubik's Cube (for example, setting up a mechanism in the Rubik's Cube to determine whether it can be rotated, without being limited to the so-called "shilling"), the essence of magic is over. .

In addition, the last Rubik's Cube wall is not a magic trick, it is actually made up of real Rubik's cubes. Note that due to the constraints between different colors of the Rubik's Cube, it can be seen from the back that the middle area and the edge area are inconsistent, especially the density of the yellow blocks, because the yellow blocks of these Rubik's Cubes are all on the back.