As more and more people live in cities, many new problems appears. For example, it takes us a lot time to find the best way for children's growth, because the environment around children is very different from what we had in our childhood. When we were children, running in the sushine and playing games with friends were the things we did most. We felt happy every day. But everything changes after more and more electronic devices came into our daily lives. Children have a lot of E-learning courses online insteads of going out for fun. They spend most of the time staying home. Without enjoying the nature and playing with friends, the percentage of children who have psychological problem increases really fast. This makes us feel very worried. The memory of sunshine and laugh just belong to adults. I hope that every adult can spend some time thinking about how much the electronic devices influence our children.