There are only four people. Can I go out with a tour group, or will the tour group arrange to play with people I don't know?

There are two ways: one is to get together in large groups, that is, travel agencies find dozens of people they don't know to form a group and travel together. This is a general group and it is cheaper; The second is to organize a group for the four of you, which is a small group. Generally, the travel agency sends a car, a driver and a tour guide (sometimes the driver is also a tour guide) to take the four of you to play, but the cost of this group is much higher.