Well, unfortunately we all missed out on the Zoo's Halloween event. Only 300 kids could take part, so it was unlikely I'd be in time to get a ticket. They do have a Halloween-related exhibit in their Education Hall, that runs through to November 4th. Okay, it's not really Halloween-related, but they put it under the theme anyway. It's looking at our futuristic world, and how it might be in coming generations.
Chinese link here.
Read about the cool Halloween event you can no longer sign up for here.