Briefly describe the creation process of acrobatic ballet Swan Lake.

In the difficult process, it is not difficult for a choreographer to do a lot of action modification to highlight the theme, such as imitating the movements of swans. Just jump up every ballet movement, just match the plot and insert the difficulty of ballet. On the one hand, it takes into account the actor's extreme ability (for example, the black swan only turns once at a time, because it is difficult to turn 32 times), on the other hand, it takes into account the audience's psychology, because the audience likes difficult and wonderful moves, so every move needs to be approved.