生活脱离社会群体，置身于一个封闭式的空间，犹如生活在蛋壳中一样，在日本称为“蛋壳文化”，这种文化现象使日本教育界十分担忧，特别是青少年如果只生活在自己的天地中，逐渐失去和他人之间的联系，失去参与感，将会造就许多怪僻，这对孩子们的成长十分不利。 Life is separated from social groups and placed in a closed space, as if it were living in eggshells. It is called “shell culture” in Japan. This cultural phenomenon makes the Japanese education community very worried, especially if young people only live in themselves. In the world, gradually losing contact with others and losing sense of participation will create a lot of weirdness, which is very detrimental to the growth of the children.