Not at all. [oof, with a first impression like that, he'd better explain - and starts with a slight bow from the shoulders] It is a title of respect among my people, used when one does not yet know the name of their guest or when it is simply dishonorable to refer to them by name. Even after all this time, in this place, among people with different customs, I still have not quite broken the habit of using proper titles.

[oh right, before he goes to get a glass to pour his wine...] ...Cao Zihuan, Lord of Wei. You may call me Cao Pi. Well met, Lady Merwen. The 'Impatient One?' Did you choose that part yourself? I couldn't imagine allowing someone else to call me something like that.