1. Before breakfast: 1) Hot compress with towel for 2-3 minutes; 2) Drop 3-5 drops on navel and massage until absorbed; 3) It is more effective to have breakfast every 5- 10 minutes (if conditions permit, you can drink a cup of warm water first in the morning); 2. Before meals: (5-6 days before meals)1. Drink a glass of warm water first. 2. Hot compress with towel for 2-3 minutes. 3. Drop 3-5 drops into navel and massage until absorbed. 4. Have dinner every 5- 10 minutes. It is better to sleep about 3 hours after supper. Drink less water and eat as little as possible before going to bed.