Sorry, wrong answer.
The Chinese invented the "fire arrow" (hollow arrow filled with gunpowder) by AD 989, not long after gunpowder was first created... and around the same time as the "peaceful" fireworks first came about.
They also created a lot of other explosives, including mortars & grenades, which they used well before they could have possibly been "corrupted" by "evil Western influences". Not to mention they created gunpowder rifles before "the West" did.