Wearing red Hanfu is one of the wedding dresses in China traditional culture, which is usually chosen as the theme color or main color of the wedding by the newlyweds. But for the best man, wearing red Hanfu may conflict with the groom's dress, because red is usually considered to be too dazzling color and easy to attract too much attention. So if the groom doesn't choose red Hanfu as his wedding dress, it may be inappropriate for the best man to wear red Hanfu. On the contrary, traditional dress or dark suit is a more popular choice, which can match the groom's wedding dress and create a more harmonious wedding atmosphere.

In the traditional culture of China, the best man is usually called "the man who protects wine" or "the man who holds flowers". They are responsible for supporting the bride and playing various roles at the wedding scene, such as guest reception and wedding ceremony.