At the live semi-final night, the duo combined the acrobatic moves with balancing their bodies to show the beauty and coordination of tough physiques on stage.

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Two Vietnamese gymnast brothers Quoc Co and Quoc Nghiep. Photo: news.zing.vn

The climax of the performance was when Quoc Co, blindfolded, balanced Quoc Nghiep atop his own head using only coordinating head-to-head contact and while moving backward and forward and upward and downward, through a set of stairs.

Their performance stunned the judges of the talent competition and viewers, and left them on the edge of their seats as they watched the routine in awe.

The final of Britain's Got Talent, featuring ten winners from the semi-finals plus one wildcard act that will be decided by the judges, and broadcast live on June 3 (local time) on the British channel ITV.

Translated by Chung Anh