ADHD, or Attention Deficit Hyperactivity Disorder, is a neurodevelopmental disorder characterized by difficulty sustaining attention, hyperactivity, and impulsivity. When someone is named Le Hoang, it's understood that they have ADHD, as this name serves as a metaphorical identifier for the condition in this context.
Girl: Is that guy over there okay?
Me: His name is Le Hoang...
Girl: Ohhh, is see. He has ADHD, right?
Me: Yes...