The English would be more natural as "The man's chair".
Why is is necessary to add "người" ?
Why is it here not necessary to put 'ấy' at the end?
Your Vietnamese is very well. A paragraph or in talking we usually put "ấy" at the end. I think in this situation they didn't use "ấy" to simpler wither learners.
Thank you very much, Minh. I apologize, I only just seen your comment today...