I know nothing about Chinese names but the original comment might have meant that it must be a given name because a family cannot have two syllables. No idea if that's true or not though!
chinese family names can have multiple syllables. Not often, but they do exist. Most times it's caried from ancestry that's not han chinese but there are so many ethnicities and so much intermixing within china that family name no longer carries any signifiers to bloodline, etc