Where is the monster book switch of Universal Studios Beijing?

The project is located in a building next to Harry Potter and the cursed children's theatre. Enter the building next to Harry Potter and the Cursed Children's Theatre, and find the entrance of the monster book interactive project. Under the guidance of the staff, go to the monster book interactive area and find the position of the monster book switch. The monster book switch is located on the large monster book in the interactive area and is generally guided by the staff. Press the switch on the monster book, you can start the interactive effect of the monster book and experience the thrilling and mysterious charm of the monster book.