What does the execution book mean?

The written execution, that is, the notice of execution, refers to a legal document in which the people's court notifies the relevant units or citizens to complete the assistance designated by the people's court according to the needs of the case.

In other words, you have made an effective judgment in the court and the case has entered the execution stage, so you have the obligation to bear legal responsibility. At this point, the case should be ascertained from the court.