steps:

1. Wash the eggs without dirt on the eggshells.

2. Dry the eggs with a towel or paper towel without water.

3. Prepare a small bottle with a sealed lid and pour in rice vinegar (just don't break the eggs).

4. Cover and seal for 24 hours.

when the lid is opened in 5 or 24 hours, the eggshell has softened, and the egg swells like a balloon.

6. Pierce the egg with chopsticks, gently and carefully spray it into your eyes.

7. Stir the egg mixture and vinegar together and mix well.

8. Cover it again and seal it for 24 hours before drinking.