What traditions do we keep?

In korea, there is a traditional day when the people do not go to school and plant trees.
It is April fifth every year. Last year the government decided to abolish the day, but I do not approve it. It should be essential to environment and country. Today Korea has many mountains and there are not many trees. People can not breathe without trees. Of course, some people do not plant trees on the day, but children can know the importance of environment through the day.