The fireworks are only going off on Friday.
I went to see a fireworks display with my family yesterday.
Fireworks have a great smell, don’t they?
The flower fire... what looks like flowers on fire? That would be fireworks. Totally makes sense, right?
The readings for the kanji that make this word are the kun'yomi readings, where fire's ひ changes to び. You already learned the kun'yomi reading for 花 when you learned the kanji, so it's only a matter of remembering to use the kun'yomi for 火. If you do, you should be able to read this word.