A man reportedly received the beating of his life outside a cinema after he revealed the surprise ending of the new Avengers film to queuing fans who were waiting to go see the movie.

According to Taiwanese media, the man was left bloodied outside a cinema in Causeway Bay, Hong Kong, after watching Avengers: Endgame.

A photo of the man has circulated online, according to AsiaOne, and shows him sitting down on a blood-spattered pavement.

It was reported the queuing fans were waiting in line when the man shouted out spoilers of the final Avengers film, and then got beaten outside the cinema.

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This comes after the Russo Brothers, who directed the film, wrote an open letter to fans to plead with them not to reveal the plot of the new Avengers film to people.

In a post on Twitter they said: 'To the greatest fans in the world, this is it. This is the end.

'The end of an unprecedented narrative mosaic spanning eleven years and eleven franchises.

'When you see Endgame in the coming weeks, please don't spoil it for others, the same way you wouldn't want it spoiled for you.

'Remember, Thanos still demands your silence.

'As always, good luck and happy viewing.'

The pair singed off the letter and wrote a hashtag at the bottom - #DontSpoilTheEndgame.

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