Where can I see scanned ancient books?

Where are the four ancient books? This is a question that many players have been asking recently. Let Xixi tell them! 1. Where is the Psychic College? There is a lake in the western plague land, in the lower right corner. The location of two or four ancient books in Nakajima is 1. Shadows in the light: The first BOOS has two stairs. Players don't go. Right. There is a table under the stairs to the left of the door, which should be near there. 2. Taboo mantras and other necromancers: The Butcher's Chamber of Secrets 43.2; 42.4, on the bookshelf floor on the right hand side of the entrance. 3. Kel 'Thuzad's deep knowledge: Someone found it on the bookshelf in the corner behind boss, and the player found it in both places! 4. Code: On the table in the room where many boring students put a lot of chemical bottles, you can definitely see them one by one. Look carefully, some players found it there!