Team mode: report one day in advance, and you will be given a colorful tape at random. The same tape is the same team, and a team is about 40 to 50 people.
Accommodation: There are two ways: one is to bring your own money and give it to the teacher in the hall when you report for duty, and the other is for parents to give the money to Yu's mother in advance and ask her to give the money order to the teacher in the hall (I should be the first choice).