It could be about various things. Maybe it's a story set in Chicago (Chi Town) that is inspired by real - life events. It might involve the city's culture, its people, or specific historical incidents that took place there.
The town wasn't a true story. It was likely a product of the author's creativity and storytelling skills, designed to engage and entertain readers/viewers with an imagined setting and events.
The Chi is indeed based on a true story. The show takes elements from real - life in Chicago, like the complex social fabric, the prevalence of crime in some neighborhoods, and the dreams and hopes of the people living there. It tries to bring to light the often - overlooked stories and characters of the area. It gives viewers an inside look at what it's really like to live in those parts of Chicago, with all the good and bad that comes with it.