As romantic birthday presents go, it probably wasn't the brightest idea.

And this Chinese man paid a heavy price for surprising his girlfriend with a boob job when he was beaten up by her - and then unceremoniously dumped.

Wang Chen, 26, had booked girlfriend Wen Ting, 24, into a local cosmetic surgery clinic in the city of Zhengzhou, in central China, thinking she would be delighted.

Low blow: Win Teng was unhappy at her boyfriend's suggestion that she should have bigger breasts

So convinced was he that the gift would be gratefully received that he even asked friend Li Wu to capture the 'big reveal' outside the clinic on camera to preserve the moment.

Unfortunately, reports People's Daily Online, he didn't quite get the reaction he was hoping for, with Wen Ting flying into a rage at the suggestion that he was unhappy with her breasts and repeatedly punching and kicking him.

Li Wu, 25, said: 'Wang had asked me to capture his girlfriend's reaction when he showed her what he had bought her.

'I don't think he was expecting this though.

Battered: The moment was captured by a friend after Wang Chen had asked him to document the less-than-romantic gesture

Bruised: A distraught Wang has vowed to win his girl back, saying 'I will come up with something'

'She went ballistic. She started shouting that she had never been so insulted in her life and that if he didn't like her breasts then he could f**k off.

'He apologised and said he thought they were lovely but that he thought she would like bigger ones.

'At that point she started hitting and kicking him. She was clearly furious and stormed off.

'I decided to stop taking photos as I realised this probably wasn't a moment he wanted captured.'

Stunned Wang later said: 'I really thought she would like the present.