听说你姓烂
[tīng shuō nĭ xìng làn]
The literal translation of 'Heard That You Have A Rotten Surname' might seem confusing, but here 'Rotten'(烂) isn't really talking about someone's last name. It actually means 'to have no morals or principles'. Hence, the whole phrase would translate to something similar to hearing someone described as being rotten or unprincipled.