(You deduced that when the security department personnel couldn't solve the problem, the Elephant Repairman would come to help.)

(Originally, there were two elephant people in the hospital, but one of them lost its mask, so now there is only one elephant person left in the hospital.)

(To deal with the Elephant Repairman, you must wear the elephant mask.)

(Breaking through with brute force is a last resort.)

(You cannot use this move until the final stage.)

(After contemplating for a while, you decide to use a fire to attract the attention of the security department.)

(The security department's manual states their responsibility to protect the hospital's property, so they will inevitably go out to rescue the scene in the event of a fire.)

(A fire can distract the security department's attention, but at the same time, you must gain the Deer-headed Man's trust and lure him to Room 0 while attracting the security department personnel to the scene.)

(You are alone, so how can you accomplish this task?)

(You look at Xu Nian, but quickly dismiss your idea.)

(If you let Xu Nian start the fire, it could end up killing him, which goes against the rules, and you would also end up dying.)

(Since you can't set a fire and lure the Deer-headed Man to Room 0 at the same time, is it feasible to make the spider in Room 0 leave the room?)

(You are amazed by your bold idea.)

(You go to the basement and steal the master key.)

(You sneak into Room 0.)

(The giant spider glares at you.)

(You take out a live toad.)

(The spider shrinks back into the corner, frightened.)

(The toad extends its long tongue and easily sticks it to the spider's head.)

(The giant spider immediately shrinks.)

(The toad retracts its tongue.)

(Just as the toad is about to swallow the spider, you quickly grab the toad's tongue and remove the spider from it, putting it into a glass jar.)

(The spider is inside the jar and about to grow larger. You stick the toad on the outside of the jar, and the spider immediately shrinks back to its original size.)

(Your experiment is successful.)

(You tie the toad and the spider together and put them in your kangaroo pants.)

(Using the staff elevator, you go to the second basement level.)

(You enter the warehouse and ignite the flammable materials inside.)

(You return to the first floor kitchen and drop a matchstick into the grease duct of the cafeteria. Flames instantly engulf the entire duct.)

(Two fires erupt and soar into the sky.)

(Everyone in the hospital is in chaos. By the second minute of the fires, all the security personnel have rushed to the scene and promptly started firefighting.)

(You quickly run to the second floor.)

(The Deer-headed Man and the doctors haven't heard about the fires yet. When the broadcast announces the situation, everyone panics.)

(A security personnel instantly appears in front of everyone, directing the guests to evacuate in an orderly manner. The doctors and nurses have to stop the treatment of patients.)

(You hide in a corner, release the toad from the outside of the jar, and throw the jar behind the crowd.)

(You silently watch the scene.)

(The spider instantly grows larger, causing panic among everyone.)

(The security department tries to call for help, but no one responds. Everyone is downstairs fighting the fire and no one can help him.)

(The spider bites the security personnel to death.)

(While the spider hasn't swallowed the security personnel's body yet, you release the toad again.)

(The toad devours the spider.)

(You rush forward and quickly take off the dog mask.)

(You hear footsteps coming up the stairs.)

(You put everything on your body into your pants, disguising yourself as a patient and blending into the crowd of patients.)

(The Dean arrives late.)

(He angrily scolds the uselessness of the security department and rushes downstairs to help with the firefighting.)

(The fire is quickly brought under control.)

(You breathe a sigh of relief.)

(You secretly return to your hospital room.)

(You hear arguing outside the square.)

(You lean on the windowsill and look outside.)

(You see the Dean aiming a gun at the shop owner's head.)

(The Dean kills the shop owner.)

(You die.)

(The deduction ends!)

"Why did I die just like that?"

Gu Yi sat up in bed, holding his head and carefully recalling.

Did I unknowingly violate some rules?

Was it the rule of "cannot stand by while someone dies"?

Yes, that's it!

The Dean must have discovered that the spider suddenly disappeared because someone used the toad to capture it, so he went to the shop owner to interrogate him.

The shop owner refused to reveal his name, so the Dean killed him in a fit of anger.

The shop owner already regarded Gu Yi as a partner, and when he died because of Gu Yi, Gu Yi violated the rule of "cannot stand by while someone dies".

If the shopkeeper hadn't died and had revealed that he bought the toad, then Gu Yi would definitely have to confront the Dean next, and in the end, there would still be no way out but death.

This path is not feasible!

Gu Yi took a deep breath and started deducing again.

(The deduction begins!)

(You lie on the bed, contemplating.)

(Currently, it's obvious that it's not yet the right time to use the toad. There must be some other way to lure the security personnel into Room 0.)

(Once the Dean joins the fight, the whole sequence of events becomes very difficult.)

(You feel that you may have been too hasty.)

(Now may not be the best time to acquire the dog mask.)

(Perhaps you should go to the secret room in the second basement again and see what's going on.)

(You put on the pig mask and enter the office in the second basement.)

(This time, the office is slightly different from before.)

(The keyboard on the desk is being pounded by an invisible pair of large hands, making a clacking sound.)

(You put on all the masks, but still cannot see the owner of these hands.)

(You speculate that this office is a shadow of the office on the third floor, and the Dean is currently working in the office on the third floor, which is why the sound of keyboard typing is heard here.)

(Since this office has a secret room, is it possible that there is also a secret room in the office on the third floor?)

(You decide to go to the office on the third floor at midnight to explore and verify your speculation.)

(Using the same method as last time, you open the secret room in the office.)

(The doll is screaming hysterically.)

(You put on the pig mask.)

(The doll suddenly stops screaming and looks at you in confusion. The woman behind the doll also looks up, her traumatized face miraculously returning to its former radiance.)

(The woman speaks, making a sound.)

(Woman: Who are you? Why do you have my daughter's belongings? Where did you deceive my daughter to?)

(You quickly think about it.)

(Your mask is Toto's handmade mask, which must hold significant meaning for both the mother and Toto.)

(The woman speaks, and the doll remains silent, clearly indicating that the mother's sanity has regained control.)

(If your answer has even the slightest flaw, not only will you not obtain new clues, but it may also trigger a death flag.)

(You activate the mask's ability to inquire about the woman's deepest desire but receive no answer.)

(You speculate that the woman's power is too strong, preventing the mind-reading ability of the mask from activating.)

(You can only try to stabilize the woman's emotions as much as possible.)

(You: Your daughter is safe.)

(Woman: You're lying!)