It is too arbitrary to say that salted eggs have no nutrition. It's just an indisputable fact that salted eggs lose a lot of nutrients during repeated cooking.

Tannic acid will be produced in the process of making salted eggs. Tannic acid and protein in food will produce solidified substances and deposit in the body, which seriously affects the absorption and utilization of protein by human body and causes the nutritional value of eggs to be wasted.

Braised eggs will also combine with egg yolk to form iron sulfide, which will affect the absorption and utilization of iron by human body.

However, the salted eggs are very delicious, which is also an objective existence. Therefore, it is understandable that you can eat some properly to adjust your life, but you should not eat more, let alone eat every day.