Place Eggs in a medium pot and pour 4 cups of water, then bring to boil. Keep boiling for 6 to 7 minutes. Turn off heat and immediately cool down the egg under running water.
In a small bowl, combine 2 cups of water and salt. Mix well until the salt is dissolved.
Peel off the eggshells and soak in the brine from Step 2 for overnight. *The longer soaked, the boiled eggs get saltier. This salted egg can be stored in a fridge for a week. *1 cup of water and 1 teaspoon of salt makes 2 - 3% salinity brine