Exercise:
Height 170 weight 220 kg is a relatively heavy weight. It is suggested to use elliptical machine, mountain climbing machine and anaerobic strength training to exercise. Don't touch running, because running with load is easy to hurt your knees.
Diet:
Don't eat high-fat and high-calorie foods, such as fried foods, candy snacks, cakes, cola and other sugary drinks.
Eat more foods rich in protein, such as lean meat, beans, dairy products, eggs, etc. Put less oil and salt in your diet.
Reducing fat is a task that requires perseverance. Insisting on exercise and adjusting diet will certainly bring unexpected gains.