Three meals a day, what food to eat, will be healthier and more nutritious?

According to the principle of food diversification, try to eat more than 25 kinds of food (including oil, salt, sauce, vinegar, tea) every day, and the combination of meat and vegetables is reasonable. For example, a bowl of milk cereal, a boiled egg and a thousand pieces of mixed cucumber for breakfast. For lunch, a bowl of red bean rice, a bowl of chicken leg meat mixed with mushroom soup, and a garlic spinach. For dinner, a bowl of corn pumpkin porridge, a purple cabbage mixed with sweet pepper and black fungus, and a shrimp and broccoli.