One party of the collage shows that the children had taken part in some sort of a competition and are standing on the winners' podium together. The other part shows Hrehaan and his friends screaming at the top of their voice while Hridhaan, who meanwhile, covers his ears, joining in. Hrithik, who merely gets a corner spot in the frame, is the audience.
Read the caption carefully for a better understanding of what is going on:
Hrithik, 42, is busy shooting for Mohenjo Daro, which is a period film by Ashutosh Gowariker. Mohenjo Daro releases on August 12.