How many years does the traditional culture book take in the first grade of primary school?

There is no standard time for primary school students to update textbooks. Can only say that big changes and small changes. Major changes include changing the edition, such as changing the People's Education Edition to Hebei Education Edition, or changing a paragraph and deleting a history lesson. It's called a big change. This does not mean that the regulations must be revised once a year. Without rules, experts feel it is necessary to update, and they will promote the upgrading of teaching materials. Minor changes are more frequent. It can even be said that it is updated every year, but it may not be found.