Guys how to get this circles which I highlighted in this picture

Guys is there any workout routine to get this chest line. It’s there any secret receipe behind this line?
I know he’s in low fat percentage and of course it’s upper chest. I assume to get this is not by basic incline workouts it seems. Do let me know? Thanks guys!

4 posts were merged into an existing topic: How Do I Train this Area I Circled?