Spring dance is definitely more difficult and skillful. It's hard to play well. Allegro in the middle, in particular, is a great test of the players' skills. This piece is not very friendly to children's paper. Shandandan is blooming and gorgeous, and it is Grade 9 on the examination paper of China Conservatory of Music, just like colorful clouds chasing the moon. In terms of length and skill, it is much simpler than spring dance.