Does it cost money to visit Shamei Building in Shanghai?

50 yuan can only visit the1~ 3rd floor, and the second floor is still under renovation. If they want to enter the terrace, they can only sit directly on the top floor from the direct elevator by informal means. But if you go up the stairs and just get to the fourth floor, you will be stopped by the staff there? I won't let you go up there. If you are crazy about terraces, give it a try. I gave up anyway? . I think these construction sites will always be open to the public after renovation, and then they will go in and take pictures aboveboard? .