Board Thread:Speculation House/@comment-67.167.27.143-20130815010410/@comment-13215692-20130927104934

It was confirmed that Lie is his family name, and Ren is his given. His name was written in general Eastern Asian format where Family/Last/Surname is place in the front, only followed by his Given/first name, unlike Yang (Unless Yang is actually her family name but this was jossed so quickly by the internet fandom)

Not every part of the world follows the  format.