Fireworks would be somewhat uncommon depending on where you are in the world (although this creature seems specific to Asia and the Chinese government might not take kindly to anyone running around with things that go boom).  I would go with any loud noise but if you want to increase the effectiveness you could add light (simulate both effects with magic).

We have considered changing the catch to a more general "explosions", which would cover grenades etc. and magical simulation of fireworks also.With regards to the Chinese government, the game is an American one (Georgia, to be specific).

Thank you to everyone who helped me by replying to this thread.

1. Do the bonus physical stress boxes from high endurance, inhuman toughness and hulking all stack?

So a creature with Supernatural toughness, hulking, and good endurance would have:

4 + 4 + 2 = 10 boxes of physical stress, 4 of which do not count against the catch?

2. Does a weapon rating stack with the bonus shifts of damage granted by inhuman strength?

3. Would a Nian's weakness to fireworks (As listed on the creature's wiki page) count as a +3 or +4 catch?

I know the last one is ST fiat, but I would welcome opinions on it nonetheless.

Thank you.