Who sang the song of the last episode of Balala's constellation 12?

As far as the plot is concerned, it is, of course, Beibei's home, Xiao Yuan and others. However, according to the comparison between the songs in 52 episodes of the original drama and the songs at the end of the film, it is hard to say whether it is Beibei's voice actor or not, and it may be the size of the original singer of Constellation Code.

Please adopt it if it is useful.