What was Xiao's real name?

Excuse me, but I have a question about the previous statement. Could you please clarify something for me? It mentions a person named Xiao, but I'm curious about their real name. Is there any specific reason why we're using the nickname Xiao instead of their actual given name? Or perhaps Xiao is simply a pseudonym used to protect their privacy? I'd appreciate it if you could shed some light on this matter for me.