Bilad al-Sham Kitchen - Macaroni with chicken and bechamel

Macaroni with chicken and bechamel

1 packet of cooked pasta1/2 cup pasta boiling water3 chicken breasts cut into cubes3 grated carrots1 cup of corn1 chopped onion1 green onion or chopped balls1 teaspoon of paprika1/2 teaspoon salt and black pepperSliced mushrooms1 sachet of chicken stock powder2 cups of milk1 cup of cream2 tablespoons of frying oil1 spoon of butter3 tablespoons of flour1 teaspoon of saltGrated yellow cheese1/4 cup of fat cheese