Wash the duck eggs in purified water and wipe them dry with a new dish cloth.
Put the washed duck eggs in the white wine and roll them evenly over the white wine.
Put the drunked duck egg in a salt shaker and make sure it is evenly salted.
Put the duck eggs in a sealed bag in turn, seal them, place them in a cool, ventilated place, and eat them in about 20 days.
1. Be sure to soak with high-alcohol liquor, soak it with wine to make the duck egg into a red heart. 2. The sealed bag should be thick and tightly sealed to avoid air leakage, just in case a thin sewing thread can be used at the sealing point. 3. If you don't like the duck egg that is too salty, you can cook it in about 15 days.