Freemasons are quasi-religious fraternities. I always thought it was a mysterious organization, but I didn't realize that the origin of the Freemasons was in London, England. Freemasonry halls near Covent Garden are easily invisible to visitors. Now the hall has several parts of the library reading room, exhibition hall and hall open to the outside world. If you visit the hall, you need to follow the lecturer. Five times a day, each visit lasts about 40 minutes. The most exquisite entrance into the hall is the bronze gate weighing 1.5 tons, and the mosaic roof with concave roof, which is very exquisite.