Preserved eggs are delicious because of different practices and different lengths of time. Some egg yolks are solidified and some are thin.

When the eggshell is opened, the egg white doesn't stick to the eggshell. If the egg doesn't give off that rotten smell, it means that the egg is still good and edible. If the shell is broken or sticky, or the yolk is loose and not solidified, it can't be eaten.

The following people should not eat preserved eggs:

1, children

Besides lead, preserved eggs also contain heavy metals such as zinc and mercury. Children's strong absorption of heavy metals will lead to skeletal and dental dysplasia, anorexia and gastroenteritis, which will seriously affect their intellectual development.

2. Pregnant women

Because of the high lead content in preserved eggs, it is easy to cause many hazards such as abortion, premature delivery, fetal malformation, fetal malnutrition, fetal mental retardation, mental retardation, behavioral defects and so on.

Refer to the above? People's Health Network-Is Preserved Eggs Safe? Baidu encyclopedia-preserved eggs (domestic egg processed products)