A man wearing a black clothes is sharpening the knife on a stone.  The man beside him on blue long sleeves drawing something on the table with his finger.  The man turn the knife to sharpen the other side and then wipe it with paper towel.  The man in navy blue shirt point to the knife while the man sharpening the knife tries to sharpen it one hand.  He continues sharpening the knife, turn it again to further sharpen the other side and wipe it again with paper towel.  Throws the old and dirty paper towel and reach the roll of paper towel and clean the knife.