Guests dressed in Halloween costumes pose for a photo with a skeleton decoration at Mission Hills Terra Art Ecological Park in Longhua District on Thursday. A series of activities will be held at the Terra Art Ecological Park, Mission Hills Sports & Eco Park and MH Mall this weekend for visitors who will go trick or treat. Mission Hills chefs will prepare Halloween dinners for partygoers, a number of bands will perform on stage and a rain of 4,000 balloons will create a romantic and exciting experience for all.