Board Thread:Theories and Rumors/@comment-29422716-20180720085737

As we know,Luh'Lloyd and Garmy's surname is "Garmadon",yet Wu's surname is "Wu".Brothers with different surnames can exist,right?From my feeble knowledge of the Eastern Asian languages,"Wu" is most definitely a surname.So unless Ninjago has a complex system of family names and whatnot,I do not understand. 