Noon: Bean buns: 80 calories, 2 egg whites, 30 calories, 1 egg yolk, 65 calories.
Boiled cabbage is low in calories, so it is 25 calories. Two watermelons: about 200 grams, 56 calories.
A peach 36 kcal honey low-fat yogurt: 80 kcal
Cucumber: 100g 12.5 calorie sugar mixed tomato: 100g 400 calorie tomato: 100g 15 calorie low-fat milk 100 calorie.
Exercise consumption: about 300 calories.
The total intake is: 850+90+80+30+65+25+56+36+80+12.5+55+100-300 =143.5 calories.
Adult women should consume 1500- 1800 calories a day. If you stick to it for a long time, your calorie intake can still be slim.
As for how long it will take, it will take about 4 or 5 months, depending on your weight and daily activity.