What are the local operas in Qingdao?

Liuqiang is a local opera in Qingdao, which was produced in the western part of Jimo in the middle of the Qing Dynasty, and evolved from the folk rap "this elbow drum". In the Qianlong period, the "elbow drum" was introduced to Jimo, and local folk tunes, rice-planting songs, and gradually changed from rap to singing, although the form is simple, the performance is simple, but because of the strong native sound, lively and interesting and quite popular. About a hundred years ago, influenced by the four-stringed dances of Laiyang County, the four-stringed huqin began to be used to accompany the music, accompanied by whistling nagas to help the voice. When the four-stringed huqin was first used to accompany the music, there was no standardized music score, so the piano player and the actors could not coordinate completely, and they could only slip upwards, so it was called "slipping cavity", and then the word "slipping" was changed to "willow cavity" due to the indecent word "slipping", for which Jimo is also known as "the township of the willow cavity". Later, it was changed to "Liu Cavity" because of the indecent word "Liu Cavity". After the popularity of the Jiaodong area, and spread into the Qingdao city.