There are no large dynamic scenes in the film, and the character dialogue in "Hwal" is also pitiful. The male and female protagonists do not have a single line, and they rely entirely on their body and expressions to perform. The film uses pictures to tell the story. Therefore, this film does not require sound. high. It is worth mentioning that the use of music in the film is quite successful. Against the background of piano music, the self-defense Hwal has a sound similar to an erhu. The simulated sound sounds quite amazing. This melodious string of desolation and tenacity, coming near and far away in the vast sea and darkness of the night, penetrates the heart, not only reflects the character and destiny of the character, but also greatly increases the elegant and poetic mood of the film. Until the old man and the girl completed the quaint wedding ceremony, as the desolate string music played again, as the girl fell asleep, the song ended and the aftertaste was long.