As the video shows, Xinjiang offers 15 years free education(kingdergarten to high school) free food, free during the break snacks and dairy, free accommodation, free school shuttle service, free healthcare.
Xinjiang provides 15 years free education from kindergarten to high school, schools also provide free school meals and dairy, school kids need more nourishment to grow well, so schools also have snack breaks and students can eat some snacks (mostly bread, eggs and milk) provided by the government.
Those are ethnic Tajik teens enjoy their break and snacks in school.
Case in point, I know you care nothing about your children, we do. Now I m good.