In Baldur's Gate 3, the Tower of Moonrise bookshelf is opened through the heart. First click on the protruding book in the upper right corner of the bookshelf, then press the ALT key to find the heart near the bookshelf, and then place it on the ancient altar on the right side of the bookshelf to interact, like this It can be turned on.
Answer: Click on the protruding book in the upper right corner, and the altar will open with the heart .
1. First go to the bookshelf with the mechanism in the Moonrise Tower. It is characterized by four outstanding books, which are easy to find.
2. Then click on the protruding book in the upper right corner of the bookshelf to activate the mechanism.
3. Then press the ALT key to find the heart near the bookshelf and place it on the ancient altar on the right side of the bookshelf. Note that only one heart is enough.
4. Finally, press the OK button, and the bookshelf will open, revealing the secret door behind it.
5. You can go to the hidden room behind the bookshelf through the secret door. Please note that there are many similar settings in Baldur's Gate 3, and pay attention to the map.