烟花和信号弹，其实，并没有什么太大的分别。特定状况下，都可以成为某种通讯方式的载体。火与秸秆焚烧，同样。
- Actually, there is not much difference between Fireworks and Signal Flares. Under certain circumstances, it can become the carrier of a Certain Communication Method. Fire and Stalk Burning, the same.