Even though he was already in the lead, Gukesh still didn't show any reaction, just crossing his arms in front of his chest calmly while also staring at the board with his sharp gaze. This was pretty much a common occasion for his opponent, as Gukesh himself was always a stone-cold during the game, never wearing emotion on his sleeves.
The boy knew that once his concentration slipped away, any advantage he had would be gone instantly, so he would rather ignore everything and crush his way through the opponent's side first until they surrendered before celebrating it after everything was over.
He acted like a machine, never letting the external interference get through his head.