Women's Fashion
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1930s Qipao
High heels would be worn, also.
Men's Fashion
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Men generally wore a gown and over-jacket. Civil servants wore a tunic suit called a Zhongshan Zhuang, which eventually became the standard male dress.
Web Links
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History of Qipao:
http://www.chinaodysseytours.com/shanghai/cheongsam.html
http://lamode-gvmiao.blogspot.com/2010/07/hk-museum-of-history-presents-evergreen.html