Local media reports that Chinese man tried to steal tourist's mobile phone

Chinese man cowers as tourist mutters 'I take you to police' as he leaves

He slaps him across the face and , 'Don't you ever f**king do that'

Black man was furious by the alleged

An angry English-speaking tourist responded to a racist insult from a Chinese man by slapping him in the face.

A Mandarin speaker had allegedly called a black man a 'Black devil' - a Chinese anti-black profanity similar to n****r - while travelling on the subway in China.

In a shocking clip filmed on a phone - which begins after the supposed insult - the enraged tourist cries 'Why? before slapping the Chinese man furiously across the face.

A Mandarin speaker had allegedly called a black man a 'Black devil' - a Chinese anti-black profanity similar to n****r - while travelling on the subway in China

In a shocking clip filmed on a phone - which begins after the supposed insult - the enraged tourist cries 'Why? before slapping the Chinese man furiously across the face

The young man clutches his cheek in agony and he bends to the floor.

'Don't you do that,' the tourist, wearing a navy Fred Perry polo shouts, disgusted by the racial slur 'Don't you ever f**king do that'.

And to drive home his point further he unleashes a second powerful blow to the green-shirted man, shouting 'F**k you man.'

The Chinese man continues to cower against the underground train's door, holding his hands to his ears, clearly terrified of the larger man.

The young man clutches his cheek in agony and he bends to the floor

'Don't you do that,' the tourist, wearing a navy Fred Perry polo shouts, disgusted by the racial slur 'Don't you ever f**king do that'

And to drive home his point further he unleashes a second powerful blow to the green-shirted man, shouting 'F**k you man'

The black tourist rounds on him a final time, seemingly grabbing his neck and muttering 'Look at me - don't you ever do that.'

As the video ends he can be heard saying 'I take you to police.' Local media reports suggested that Chinese man had attempted to pickpocket the tourist and steal his phone.

It is not clear what the tourist's nationality is.

The Chinese man continues to cower against the underground train's door, holding his hands to his ears, clearly terrified of the larger man