In traditional Chinese opera, the role of eunuchs is an important one.

They are often seen wearing a black hat with red tassels, known as the "official hat" or the "eunuch hat".

This type of hat was popular during the Qing Dynasty and was worn as a symbol of status by emperors and officials.

The design of the official hat is quite unique, featuring a round top and a long, flowing tassel.

The tassel is usually red and can move freely, giving the hat a regal and elegant appearance.

In addition to the official hat, eunuchs in Beijing opera may also wear other types of hats such as the "small hat" and the "big hat".

These hats come in various shapes and styles, but they are all designed to enhance the character's image.

Overall, the official hat in Beijing opera is an important cultural symbol that represents power, status, and dignity.

By wearing this type of hat, actors can better portray their characters and convey a unique artistic charm to the audience.