What are donkey friends and carpooling?

Donkey friends and carpooling are new terms.

Donkey friends are tourists. Generally, it means that several like-minded people agree to go to a place to play together, and the cost is AA. The fundamental purpose is to spend the least money to get the most fun.

Carpooling, some people have a car, others each give a share of money to the owner, so that the owner can send himself to his destination. Generally used for urban office workers and travel enthusiasts.