A real killer playing a villain; the guy surnamed Zhen in Detective, run!

Several people huddled together, piecing together the diary for a long time, but only managed to piece together a few sentences:

"She always wakes up at four o'clock."

"There is no patient in bed number seven."

"The clock stopped after the second round of ward rounds."

墙上血字里，有「4：72」「7-2」「病历0417」「床号2」之类乱七八糟的数字。

Shen Yiming held the music box, his brows furrowed deeply.

Big Smoke said, "Could it be the bed number plus the time? Four o'clock, bed number seven, second round of rounds, password 472?"

Meng Ying: "But 4.72 is unreasonable."

He Rihu stayed close to the wall the whole time and did not participate. His main job was to observe whether Lu Yuan entered the danger zone.

Lu Yuan stood on the other side of the ward, looked up at the clock, and saw it was 11:26.

It's still early before lunchtime, but the recording process is unpredictable. Variety shows are masters of dragging things out, turning a hot chicken leg into a cold one.

Shen Yiming walked to the iron fence. "I'll give it a try."

Meng Ying: "The number of errors is limited."

"Let's try to deduce the result first, otherwise getting stuck here won't solve anything."

Shen Yiming dialed "472" and pressed the confirmation button on the side of the lock.

"Beep—Buzz!" A piercing alarm sounded.

The ward lights were switched to red, and wisps of white mist rose from under the bed.

One error.

Meng Ying withdrew her hand: "It's over."

Da Yan, clutching the torn diary, said, "No, the second round of ward rounds should be number 2. Waking up at 4 AM is number 4. There's no patient in bed number 7, so maybe we should rule out number 7?"

Meng Ying: "Is that 042? Or 247?"

Shen Yiming pursed his lips, looking a little embarrassed.

He was the most skilled at solving puzzles among the regular guests, but he got it wrong on the very first try.

Inside the broadcast van, Yan Ji downed half a bottle of mineral water. Finally, the lump in his chest eased a little.

"See that? This is what an escape room is all about." He pointed to the screen. "It was custom-made by Tsinghua University's Mathematics Department. Three layers of interference, two sets of pseudo-logic, and a real clue hidden in the music box scale. You can't beat it just by being fast."

Xiao Zhao quickly chimed in, "Teacher Lu hasn't touched a single prop so far."

Yan Ji sneered, "Forceful suppression won't work. Let's see how he breaks through."

Inside the ward, Lu Yuan sighed, "With all this stuff in the room, it'll take you half an hour to find it, and lunch will be cold by then."

Shen Yiming's patience ran out after being hit by the false alarm.

"If Brother Lu is hungry, lend a hand. You can't get the password to appear if you're just standing there talking."

That's a bit harsh.

Meng Ying quickly smoothed things over: "Don't rush, let's look some more."

Lu Yuan didn't respond. He walked to the medical cart next to him, opened the drawer, and took out a pair of medical rubber gloves.

He slowly and deliberately put on the white gloves.

He Rihuo kept staring at him. He saw Lu Yuan put on gloves and press his back against the wall.

Then he reached out and grabbed Da Yan and Meng Ying's clothes, pulling them back three meters.

He almost pulled the opium pipe down.

"Teacher He, what are you doing?"

He Rihuo lowered his voice: "Don't ask, just stand here, it's safe."

Shen Yiming was still squatting in front of the lock when he saw Lu Yuan coming over. He reminded him, "Brother Lu, this lock has a limit to the number of times you can make a mistake. If you make three mistakes in a row, the dry ice tube above your head will spray out extremely cold air. Don't mess around."

Lu Yuan ignored him and walked directly to the iron fence.

Hold the lock handle with your left hand, place your right thumb and forefinger on the first dial, and then close your eyes.

Shen Yiming was stunned: "No, you're not even looking at the clues?"

Meng Ying whispered, "Is he going to rely on metaphysics?"

Big Smoke: "Don't speak, I have a bad feeling."

Inside the broadcast van, Xiao Zhao leaned closer to the screen. "Why is he turning it with his eyes closed? Is he trying to pick the special anti-theft lock by luck?"

Yan Ji's face darkened again. "Impossible. Three-digit numbers, from zero to nine, ten levels per dial, a thousand combinations. It even has an accidental trigger alarm; if he touches it randomly, he'll only trigger the punishment."

In the ward, Lu Yuan's hand moved.

The first turntable was gently moved one notch, then stopped!

After another half-square, it stopped again!

Inside the lock cylinder, the contact between the pins and gears generates a tiny vibration, which is transmitted to the nerves in the fingertips through the brass casing, the grooves of the rotating wheel, and the rubber glove.

At 0.7 seconds, the first set of gears fell into the groove!

1.2 seconds, second group back in position!

At 2:08, the third set of turntables jammed!

Lu Yuan opened his eyes and pressed his wrist down.

"Click." The brass latch popped open.

The alarm abruptly stopped! The red light switched back to white!

In the hospital room, half of a puzzle piece fell from Shen Yiming's hands to the ground.

Meng Ying pointed at Lu Yuan, words swirling in her throat, but after a long pause, she only managed to utter one word: "You..."

Big Smoke looked at the lock, then at the blood-written words on the wall, "What did we just spell out...?"

Shen Yiming's face flushed slightly, but he forced a smile and asked, "Brother Lu, did you memorize the password beforehand? Did the production team give you special treatment?"

He Rihuo stood by the door, three meters away from Lu Yuan, his voice trembling but firm, "Impossible."

Shen Yiming turned around: "Brother He?"

He Rihuo stared at the unlocked lock. "With his fatherly aura, he doesn't need to memorize the answers."

He paused, then said, "The answer was afraid of him, so it jumped out on its own."

The ward was silent for two seconds.

This statement is outrageous, but recalling the moment the brass lock was opened, no one could find a point of rebuttal.

Lu Yuan casually ripped off the lock, pushed open the iron gate, and said, "I'm leaving."

Inside the control van, Yan Ji sprang to his feet, slamming his hand on the control panel. "Who leaked the secret? Who gave him the key combination?"

Lao Fang quickly waved his hand: "Impossible, only the props team and the control room know the password, and the guests' phones have been confiscated."

"Investigate!" Yan Ji roared. "Call all the stagehands! And the locksmiths too!"

He didn't believe it! Someone could unlock an outsourced logic lock in three seconds with their eyes closed, without even looking at the clues!

In the back row, Jiang Yan had already stood up and brought up the playback of the camera angle above the ward door.

The speed decreased to 0.2 times.

Lu Yuan closed his eyes, put on gloves, and placed his fingers on the turntable.

In the slow-motion footage, when the first set of turntables passed the numbers, his fingertips paused very briefly, which was tactile feedback.

The second and third groups were the same; each pause occurred at a point where the lock cylinder structure changed.

Jiang Yan stared at the screen, her back taut.

Killing techniques, psychological destruction, tactical evasion, Grey Man techniques, and now top-notch hand manipulation.

Just how many layers of skin is this man hiding?

Inside the ward, Lu Yuan took off his rubber gloves and threw them into the trash can from two meters away—right in the middle!

He looked up and waved at the corner camera.

"Director, we passed this hurdle."

He paused, then added, "By the way, will lunch be served promptly at twelve o'clock? I don't eat cold chicken legs."