Goulan was the main performance venue for operas in the Song and Yuan Dynasties in the city, and later referred to as a brothel.

In the Song and Yuan Dynasties, people called commercial entertainment venues "Washe" (or "Wazi", "Washi", "Wasi", etc.), and the theater set up in Waseli It's called "hook bar". Goulan originally refers to the "King of Night Sky Tower" and is a building for enjoying music. From the historical perspective of the development of opera art, almost all theaters in the Tang Dynasty were based on temples. In the Song Dynasty, such temple theaters began to spread among the people with the development of urban industry and commerce and the disintegration of the curfew system, forming a scene that spread throughout the streets in the Song Dynasty. entertainment venues. Due to the close relationship between traditional theaters and temples, people borrowed the word "Washe Goulan" to refer to the buildings that specialize in performing acrobatics, singing and dancing. If the Goulan tiles can be restored, people can revisit this rare cultural treasure that has been forgotten for a long time in China's cultural heritage.