As unrelated individuals left the filming location, the crew continued shooting inside the studio.
After the initial few early plot segments were completed, the set couldn't be limited to just a few streets and cafes anymore. The city protected by "superheroes" had to reveal its entire face.
Of course, most of the grand scenes in this city had to rely on post-production special effects for the most part.
Generally, the physical props needed were very detailed small items, such as benches, trash cans, neon lights, and the like on the streets. These objects might appear small, but they were incredibly detailed. Using special effects to synthesize them not only made it difficult to recreate a sense of reality but also incurred high costs, so it was better to spend a little money and buy real props.
