What is the name of the Chinese men dress?

The traditional Chinese men's dress is commonly known as the "Changshan" or "Zhongshan suit." The Changshan is a long, straight-cut robe typically worn for formal occasions, while the Zhongshan suit, also called the "Mao suit," is a type of suit designed by Sun Yat-sen that became popular in the 20th century. Both styles reflect different aspects of Chinese cultural heritage and history.