Wash the eggs thoroughly and prepare them.
Add soy sauce, water, sugar, minced garlic, and green onions to a pot and bring to a boil.
Once the marinade boils, turn off the heat and let it cool.
Boil the eggs until fully cooked, then peel the shells.
Place the boiled eggs in a container and pour in the cooled marinade.
Let them marinate in the refrigerator for at least 6 hours.