青裤青褂
[qīng kù qīng guà]
'Blue Pants and Coat': This could simply mean they like the color blue. Or it might refer someone in youth or vitality era. 'Qing', usually meaning green in today context, was used to refer deep blue color in ancient times, so this also may hint a classical and elegant style the owner pursues in her/his online presence. Meanwhile, pants and coat set together suggest tidiness or neatness.