Conveying a powerful message of "oneness of humanity" was the highlight of the glittering opening ceremony of the 2018 men's hockey World Cup here as Bollywood heart-throb Shah Rukh Khan, Madhuri Dixit and renowned music composer A R Rahman dished out enthralling performances, Tuesday.

The ceremony showcased first-of-its-kind theatrical production - The Earth Song, which beautifully depicted the theme of the ceremony.