The Day My Laughter Became An Obsession
7 min read

Chapter 4

Chapter 4 — The Day My Laughter Became An Obsession

Updated 10/08/2026 7 min read

"The special investigation team has taken over Trinh Thi's laboratory. Trinh Di Tham is officially restricted from leaving the country! If he is found guilty of academic fraud and cannot repair the damage, his research career will completely end."

【Internal storm: Trinh Thi is in turmoil!】

"Tensions within the Trinh family escalated! Important data from the laboratory was stolen! A key member of the research team—Bach Vu—is now mysteriously missing!"

I read those news lines, the corners of my lips slightly raised. Those who once pushed me into the abyss of despair are now the ones who are falling the most miserably.

8

Vengeance... but let me do it myself! The family never mentioned a plan to deal with them in front of me. They were afraid they would reopen old wounds in my heart. That day... When I woke up after lunch break, I accidentally heard my family discussing in the living room. My mother's voice was filled with indignation:

“Let's fight poison with poison, let them also taste what it feels like to be destroyed!”

My father gently held my mother's hand, his voice calm but sharp:

“My dear, you are too kind.”

After that, my brothers began to come up with countless ideas for revenge, some were even interested in drawing up all kinds of impossible plans. I listened silently, then calmly pushed the door open and entered. Facing their surprised eyes, I just gently said:

"Can you take them to S city? Let me handle it myself."

My father looked at me, his eyes full of pride, and a comfortable yet sharp smile:

“Of course. You are worthy of being my daughter.”

At that time, all over the newspapers... 【Hot news: Trinh Thi Laboratory faces huge compensation!】

"A series of projects were suspended! Investors all withdrew! The laboratory is at risk of complete bankruptcy!"

【Special news: Trinh Thi collapsed!】

"The laboratory is officially shut down! All equipment is being liquidated! Assets are being sealed and auctioned!"

【Shocking news: Trinh Tu Mac mysteriously disappeared!】

“According to internal sources, Trinh Tu Mac has fled abroad, avoiding investigation.”

Everything is going as planned. But this is just the beginning. Soon… All of them will have to face a real nightmare.

"Trinh Di Tham's freedom was restricted, his academic career was on the brink of collapse."

“Trinh Thi Laboratory suffered a data leak, years of research went down the drain.”

When I read this news, I—a person who had suffered from insomnia for a long time—was able to sleep peacefully again. The Chu family and the Bach family also appeared in the news one after another with news of bankruptcy and complete collapse. But this is still not enough. More and more people are willing to step on the bodies of the Trinh family a few more times. The stains that they tried to hide for so long were also exposed by insiders.

"Degenerate morality! Two brothers, Trinh Di Tham and Trinh Tu Mac, both fell in love with Bach Vu."

"To please Bach Vu, Trinh Tu Mac plotted to harm his girlfriend, humiliate her right at the graduation ceremony, pushing her into a dead end! His whole family is truly inhumane!"

"The Trinh brothers wrongly bet on the Bach sisters! Result: betrayal, secret research documents stolen!"

Just for a while In a short time, the Trinh family became something that society hated, like rats running on the street—everyone wanted to beat them to death. No one mentioned them without spitting contemptuously. Not only Trinh Di Tham and Trinh Tu Mac, but even distant relatives of the Trinh family did not dare to raise their heads on the street. Not long after, bad news from the Trinh family kept coming.

"Trinh Tu Mac had a car accident while hiding, his whereabouts are currently unknown."

"Trinh Di Tham committed suicide by drinking poison while in custody, no one came to claim his body."

“The two Bach sisters suddenly disappeared, their whereabouts are mysterious.”

"The old man and woman of the Trinh family simultaneously jumped off the building and committed suicide..."

I stared at the news, the corner of my lips curled up into a cold smile. This news... most of it is fake. Except for one thing... The death of two elderly people of the Trinh family.

9

On the underground third floor of Lam Thi medical center, inside the secret laboratory. I stood in front of the observation glass wall, my cold eyes scanning the four "experimental samples" inside. Trinh Di Tham, Trinh Tu Mac, Bach Vu, Bach Lan—four people who should have disappeared from this world, are now here. All of them were tied tightly to the specially made surgical table, with no chance of escape.

“Sister, this is the nerve stimulation device that we have just successfully researched.

It can precisely locate each pain-sensing nerve.” The eldest brother's calm voice rang in my ears. I smiled and nodded, my tone was calm but contained absolute cruelty:

“Let them choose who will endure the next electric shock.”

“Whoever is not chosen—the pain will be doubled.”

The game begins. Bach Vu was the first to collapse, screaming and betraying everyone else just to preserve his life. Trinh Tu Mac, wanting to survive, calmly chose his own brother - Trinh Di Tham. Bach Lan's tongue was removed, she couldn't speak, and could only randomly choose someone out of desperation. As for Trinh Di Tham—the man who was once so noble, once an unmatched genius—now, he laughs like a madman in extreme pain.

“Continue?”

The eldest brother turned to ask me. I calmly turned around and walked out, without looking back:

“Continue.

Let them clearly feel what it means to be betrayed.” Behind me, miserable screams echoed throughout the closed room. The room next door... The people who drugged me are also locked up there. But I don't need to see their faces. I just advise you:

“Make sure they can clearly hear every scream of these four people.”

10

A moment later, I walked into the experimental basement alone. Maybe… I'm still too lenient. Born into a family like this, I had to learn how to face the darkness. The strong smell of disinfectant mixed with the fishy smell of blood. The supervisor looked at the four people in the laboratory, then turned to me, smiled coldly and asked:

“Miss, do you have any instructions?”

I thought for a moment, then slowly said:

“Let them go.”

“Let them kill each other.”

“The rules are simple—use anything in the lab as a weapon.

As long as it doesn't kill the opponent immediately, you can torture it any way you want."

“The best ‘player’, the best…

I will give him a chance to survive.” Hearing that, the supervisor smiled appreciatively:

“Indeed, our lady.

The most cruel people, because they want to live, will stop at nothing." He nodded and immediately started making arrangements. A few days later… I went back to check on the situation. The four people inside could no longer retain their human form. Trinh Di Tham—who used to be arrogant and lofty—now his left arm has been severed, hanging down covered in blood. He used his right hand to clutch a surgical knife, his eyes wild like a stray animal. Trinh Tu Mac—not much better. His stomach was slit open, all his internal organs exposed. He used his hand to cover the wound, his face as white as a corpse. Looking at his condition, Trinh Tu Mac probably won't last much longer. Bach Lan cowered in a corner, only a bloody hole remained in her left eye. Fresh blood kept flowing down, dyeing his pale face red. In her hand was a surgical clip covered with pieces of broken flesh, her cold eyes were like a poisonous snake waiting for its prey. Bach Vu lay motionless on the floor, his legs completely destroyed by corrosive chemicals. In her hand, she still clutched a broken test tube, the glass edge covered with pieces of flesh and blood. The atmosphere reeked of death and despair. At this point, they are no longer human. Just animals locked in cages, with only the desire to kill remaining in their eyes. I turned to the medical team next to me and gently ordered:

“Let's choose the 'best' person in this experiment.”

Without hesitation, everyone pointed towards Trinh Di Tham. As expected of being the most dangerous person—an old fox good at manipulating people's hearts. He looked at me, his previously creepy eyes suddenly turned gentle, filled with infatuation.

“Darling…

Because of you, I have to live. You are my only hope.”

“Please… forgive me…

For the rest of my life, I vow to be your slave."

“As long as I'm by your side, you can do anything you want.”

Ha. Even though we've come to this point, we're still playing tricks with sweet honey to kill flies. I burst out laughing, laughing until my whole body trembled, laughing until I couldn't breathe. Stay with me? So you have a chance to betray me again?

"Trinh Di Tham... Turns out you're even more naive than me."

His eyes turned from cruelty to despair. I lowered my head and looked straight at him, my lips slightly raised, then slowly said:

“I changed my mind.”

“None of you can die.”

“You... must all experience the pain I endured!”

I command:

“Injecting nerve stimulants into their bodies.

Arrange a few emergency specialists for each person, make sure they can't die."

“As ordered, Miss Lam!”

When I left the lab, I saw my parents already waiting outside. They hugged me tightly.

“Baby… Your life has just begun.

Don't let hatred bind your future." I nodded slightly, smiling between quietly falling tears. End

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