You can join a group or travel freely. If you go by yourself, you will run at both points I mentioned above. If you join a group, you will go to many places (basically you will add shopping spots), but other places are actually meaningless, especially the Mausoleum of the First Qin Emperor. Don't be confused by the name, it's nothing.
It's more free to play with the group, but it's boring to look at these monuments without explaining them. You can spend money to hire a commentator on the spot, or review the guidance of other teams.