What does it mean to love fireworks like mountains and seas with a bright future?

"Love Like Fireworks over Mountains and Seas" comes from the film "Love Myth", which tells the story of love, friendship and affection with tears in laughter centered on a group of old friends in Shanghai. It means that the person I love is so far across the mountain and the sea, and I will turn into fireworks to light up all your nights. "Love between mountains and seas" means that it will be more difficult and arduous if we live far apart. There will be huge obstacles and many difficulties to overcome. The love between two people is like a mountain and a sea. "Fireworks are always bright with you": This sentence is an artistic conception, which means that you want to light up and not let your night fall. Because the "night" we know is bad, low, down and out, and so on. So light you up with fireworks.