Use of Changshan
Changshan are traditionally worn in pictures, weddings, and other more formal historically Chinese events. A black changshan, along with a rounded black hat, was, and sometimes still is, the burial attire for Chinese men. Changshan are not often worn today in mainland China, except during traditional Chinese celebrations but, with the revival of some traditional clothing in urban mainland China, the Shanghainese style functions as a stylish party dress (cf. Mao suit).
Read more about this topic: Changshan