How to pickle salted eggs at home?

The pickling method of salted eggs is as follows:

Boil two Jin of salt in water and let it cool; Wash the eggs and put them in cold salt water. Remember, the water should be cold, or the eggs will be cooked. Seal and marinate for one month until the eggs are shaken and ready to eat. Although there are no red hearts of salted duck eggs, they are all delicious.