Introduction to the Circular Corridor of the Opera House: The circular corridor space on the north side of the main building of the Opera House. The metal mesh built around it is like a natural barrier, blocking the hustle and bustle of the public hall and forming a natural atmosphere of the Grand Theater. Exhibition platform. The circular gallery on the first floor mainly displays text and pictures of various performances. The circular gallery of the opera house on the second floor brings "Opera Feast - Tour of World Famous Opera Festivals" all year round, introducing opera festivals around the world.