There is a cross relationship between concept A and concept B if and only if (1) the existing object belongs to both A and B; (2) The existing object belongs to A but not to B; (3) The existing object belongs to B but not A.
According to the above definition, the cross relationship between the two concepts of adding points is that in order to improve the food, the 30-year-old general manager of the canteen of Luoyi primary school put several opinion books in the canteen to solicit the students' opinions.