There is no clear derogatory or commendatory meaning in addressing Mr. Yuan, but a kind of address for people surnamed Yuan. Whether it is derogatory or positive depends on the specific context and people's subjective understanding of the name Yuan Zong. Some people may think that this kind of address is a form of respect or intimacy and can be regarded as a compliment. Others may think that this title is too casual or disrespectful, and it will be derogatory.