He had been to the secret chamber several times and had flipped through the books more than once. However, only last time did he fall into a trap. Yang Xiao suspected that not many books were tampered with; these were the secrets the Sect Master didn't want outsiders to pry into.
With this thought, Yang Xiao put on the Drama Robe, took out the Soul-Capturing Mirror to enter the Mirror World, and returned to that secret chamber. This time, Yang Xiao tried to communicate with the Little Mirror Ghost, letting it out to play first, and planned to lend it the Ghost Lantern after finishing his own tasks.
After coaxing the Little Mirror Ghost out of the secret chamber, Yang Xiao began his plan. Holding the Ghost Lantern in his left hand and flipping through books with his right, the Ghost Lantern, with its illusion-breaking and dispelling effects, served as a safety precaution for him.