Eat Chinese food normally for breakfast, eat less or not for 3 months for dinner, and you can lose about 15 kg. I've experienced it myself.

You can also exercise, walk quickly or climb the stairs. Stretch before each exercise, and then stretch for about 40 minutes to avoid hurting muscles. You can also practice yoga, which is aerobic exercise and is very effective for thin abdomen.

Pay attention to rest at night, form a good habit of going to bed early and getting up early, and try not to eat fried and spicy food.