What do you mean by flying saucers and building rockets in Jia's The Good Man in the Gorge?

The meaning of flying saucer is actually the exchange of present and future, and it has no profound meaning.

The building flies away, which means that it is built in a high position along the Three Gorges, which is a traditional style of China, but it is an unfinished building, standing on the shore in the dark, which is very out of harmony with the scenery on the shore. The director thought it should be dismantled, but the reality was not good, so it was put in the movie. Later, I saw the news that the building was demolished.