Thanks to helpful @adland twitter follower @zhangcheng_uk I now know that the shirts say: “原谅我”(3 shirts together) which means forgive me." Thank you.

Project Name: Beef 2012 'Manly Man' Creative Agency: TBWA\Shanghai Client: McDonald's China Group Creative Director: Kienhoe Ong Creative Director: Joe Zhou Associate Art Director: Steven Chung Senior Art Director(s): Ming Zhang Copywriter(s): Popo Jin Director: The Real McCoys Production Company: P.I.G. China Production Company Executive Producer: Nick Dodet Head of Planning: Ellen Hou Agency Producer: Raymond Lau and Mo Chan Brand Team Leader: Brian Swords Group Account Director: Jane Lim Associate Account Director: King Lee Media Agency: OMD