Reason: Jiang Li Hua is her real name, though it's less popular than "Tianzi". Though, "Tianzi" in chinese (meaning "Child of Heaven/Sky") is a common title for Chinese Kings, not anyone's name.
I would argue that it's better to use a name rather than a title, even if it is an obsure one. Of course, that name would have to be properly sourced, something the previous discussion doesn't seem to have adequately achieved.