In fact, in the game, we will encounter the essence of existence in Divinity Original Sin 2 from time to time. In fact, there is no need to worry, just these few small steps can solve this problem.
Answer : At coordinates [X630, Y155].
1. In the mission "Existential Crisis", there is a mysterious object hidden at the coordinates [ X630, Y155 ].
2. Find the three books titled "The Nature of Existence", the answers are all in them.
3. More importantly, it cannot be defeated (Fionn can complete this mission without reading).
4. The first book, Laerke's study.
5. Book 2, lobby on the first floor.
6. In the third book, there is a cat and puppy in the room on the second floor.
7. Reward: Obtain 9650 experience points and the mission ends successfully.