Early education refers to the activities of educating, training and cultivating children through various methods from birth to 6 years old. This stage is a critical period for children's brain development, and it is also an important period for children's learning ability, language ability, social ability and other aspects of development.

There are several reasons for missing the critical period:

1. Rapid brain development: During the critical period, children's brains develop very rapidly, which is the best time for them to learn new knowledge and skills. If proper stimulation and education are not given at this stage, it may affect the normal development of the brain and lead to a decline in learning ability.

2. Establishment of learning ability: During the critical period, children's learning ability is gradually established and improved. If you don't get effective education and training at this stage, it will be difficult to make up for the shortcomings at this stage in the future.

3. Cultivation of language ability: During the critical period, children's language ability develops rapidly, which is the best time for them to master a second language. If you don't give enough language input and practice at this stage, your language ability may fall behind.

4. Development of social skills: During the critical period, children's social skills are also constantly developing. If you don't give enough social environment and opportunities at this stage, it may lead to children's lack of ability to communicate with others.

5. Habit formation: During the critical period, it is very important for children to develop habits. If you don't develop good living habits and study habits at this stage, it will be difficult to change them in the future.

Therefore, early education should not miss the critical period, and parents should seize this golden period to provide appropriate education and training for their children and help them develop in an all-round way.