HE IS SHARPENING THE KNIFES BY TRAVELLING ALL AROUND WITH HIS SHARPENING MACHINE AND KNIFES.
Some sharpeners has small shops and some sharpeners works mobile like him. It's usual to see street sellers in Turkey like sharpening, selling duvet covers, picking recycling materials, selling ice cream...... I can't forget my memories in my childhood when the ice cream seller was coming to our street :D