Mainly through the timing and music atmosphere of the soundtrack.

The thought of the soundtrack reminds the viewer of the arrival of a certain plot node, and at the same time uses the soundtrack to express emotions. The downbeat and sad music means that the plot has developed into the emotional part and is relatively sad. The brisk soundtrack often means that the plot is becoming optimistic or even optimistic. It's funny.

The themes of Black Sun Crisis are greed, revenge, delusion to unify the world, and high-tech terrorist activities. Therefore, the soundtrack is also more intense and extreme to different degrees to express emotions.