The Chinese Hebei Clapper Opera, also known as Xiaodan, is a traditional form of Chinese opera that originated in the northern province of Hebei.

It is characterized by its unique vocal style, which involves a high-pitched and nasal singing technique called "xiaodan" or "little dan."

The performers wear elaborate costumes and headdresses, with the most famous being the "zhenzhu shan" (a type of maidservant dress) worn by young ladies.

One of the most striking features of the Xiaodan Clapper Opera is its use of percussion instruments, such as clappers and drums, to create a rhythmic beat that complements the singers' voices.

These instruments are often played by a group of musicians who sit behind the stage and play in sync with the singers.

The Xiaodan Clapper Opera has a rich history dating back to the Qing Dynasty (1644-1912), when it was popular among the imperial court and commoners alike.

Over time, it evolved into different regional styles, each with their own unique characteristics and repertoire.

Today, it continues to be performed in various parts of China and around the world, showcasing the beauty and complexity of this ancient art form.