Why does the photo assistant need to be between 18 and 25?

18 is the age of adulthood. If you are not 18, you can avoid using child labor. However, if you are under 25, you are unmarried. You will have no burden from your family and brain. You are strong, smart and clever. The whole person is the golden age of life and naturally works well, so you can generally be 18-25 years old. After the age of 25, you will basically get married, and there will be a lot of trouble, so it is not very easy to use. The use of photography assistants at this age is likely to have business learning factors.