You still have to worry about not having a place to sing Shanghai Opera in Shanghai, since you are in Shanghai. You can watch the "People's Theater" column on the "Colorful Drama" channel, which often introduces many drama salons and box offices. Salons and box offices of Shanghai Opera are also common. You can go to whichever box office is closer to you. Theater fans are very enthusiastic and will definitely welcome you. If you sing well, you will be more popular.