The guide to obtain the three forbidden books in "Collapsed Star Railroad" is a matter of great concern. Players can easily resolve this issue as long as they follow the steps below.
1: We first come to the location of Dandingsi in the picture below. After talking to Yuluo, we choose to ask what books we need to retrieve. After triggering the task, we go to retrieve three books;
2: We find Xiaoyu at the location shown below in Dan Dingsi and have a conversation and get the Silent Scroll;
3: Go to the location of Taibusi to find the anxious woman, and after the conversation, pick up the Scroll of Madness on the ground;
4: Finally, go to the location in the picture below in Jinren Alley, listen next to Di Ting and Yun Qijun, and get the Scroll of Wisdom after the dialogue;
5: After we have collected three books, we return to Dandingsi, find the NPC to have a conversation, and choose me to return the forbidden books to complete the task.
I believe that after reading the guide brought to you, you will have a clear idea of the solution to this problem. So what are you waiting for? Come into the game and give it a try. As long as you don't miss any step on this site, you can easily solve this problem.