St. Paul's Cathedral ranks fifth in the world (the world's top four seem to be all in Italy) Ha-ha-ha-ha-ha-ha-ha-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho-ho- Ha-ha-ha-ha-ha-a little guide forgets that Sunday will be a week. We came here on Sunday because of the worship activities, so we can enter free of charge, but in-depth visits are not allowed. We took part in an unexpected trip to England with a choir. The choir's children's voice chorus is really a kind of sound of nature, which can purify the soul. Finally, we donated money to the Cathedral for confiscating tickets.