I used to believe that one day Khai Thanh would remember he was still Minh Duong’s father.

That phone call killed the last part of that hope.

I opened my eyes and said calmly:

“Understood.”

He seemed almost surprised.

“That’s it?”

“Yes.”

I looked through the glass door.

Minh Duong was still filling out his Harvard enrollment forms.

“You said your responsibility ends today. I heard you clearly.”

Khai Thanh laughed.

“Good. Don’t call me later when you discover how expensive America is.”

“I won’t.”

I ended the call.

Then I transferred the one yuan back.

The note contained only six words:

“Payment rejected. Relationship already settled.”

After that, I blocked him.

When I returned to the room, Minh Duong looked at me.

“Dad?”

I hesitated.

He smiled faintly.

“Mom, I’m eighteen. You don’t have to protect me from every ugly thing anymore.”

My chest tightened.

He had heard.

I sat beside him.

“Your father said he won’t contribute to university.”

Minh Duong nodded.

“Okay.”

“That’s all?”

He turned the laptop toward me.

The Harvard letter was still open.

Underneath the admission notice was the financial-aid package.

Tuition.

Housing.

Meals.

Insurance.

Nearly everything covered.

Then he opened another email.

A private foundation had awarded him an additional scholarship for mathematics research.

“Mom.”

He took my hand.

“I never needed his money.”

His voice softened.

“I only wanted to know whether he cared enough to ask.”

That hurt more than anything Khai Thanh had said.

Three days later, the Luc family discovered where Minh Duong had been admitted.

Not from me.

From the school.

His high school posted a photograph on its official page:

“Congratulations to Luc Minh Duong, admitted to Harvard University with comprehensive financial support.”

Within twenty minutes, the family group exploded.

My former mother-in-law wrote first:

“Harvard?”

Then:

“Is this really our Minh Duong?”

An aunt tagged me.

“Why didn’t you tell the family?”

Another relative wrote:

“Khai Thanh, your biological son got into Harvard!”

For almost five minutes, Luc Khai Thanh said nothing.

Then my phone began ringing from an unknown number.

I knew immediately.

I answered.

His voice was different now.

“Minh Duong got into Harvard?”

“Yes.”

“Why didn’t you tell me?”

I almost laughed.

“I asked you whether you wanted to know which school your son was attending.”

Silence.

“You said, ‘Know what for?’”

His breathing became heavier.

“That was before I knew it was Harvard.”

Exactly.

That was the whole problem.

He continued quickly:

“How much is the tuition? I’ll arrange something.”

“No need.”

“I’m his father.”

“Yesterday you bought out that relationship for one yuan.”

“I was angry.”

“No.”

My voice remained calm.

“You were celebrating another boy and wanted to make sure Minh Duong understood exactly where he ranked in your life.”

He lowered his voice.

“Don’t poison my son against me.”

I looked at the boy sitting across from me.

He had spent sixteen years making excuses for his father without my help.

“You did that yourself.”

Khai Thanh came to our apartment that evening.

He brought fruit.

Supplements.

And an expensive laptop.

Gifts worth more than everything he had voluntarily bought Minh Duong in the previous several years combined.

Minh Duong opened the door.

For a moment, father and son simply stared at each other.

Khai Thanh smiled awkwardly.

“You’ve grown.”

Minh Duong answered:

“I’m eighteen.”

The smile disappeared slightly.

“I heard the good news.”

“Yes.”

“Harvard is excellent.”

“I know.”

Khai Thanh lifted the laptop.

“I bought this for you. You’ll need something good overseas.”

Minh Duong didn’t take it.

“I already have one.”

“This is better.”

“No, thank you.”

Khai Thanh finally became impatient.

“Why are you behaving like this? I’m trying to support you.”

Minh Duong looked at him.

Then he took out his phone.

He opened the bank notification.

The one-yuan transfer.

The note remained underneath it.

“I saved this.”

Khai Thanh’s face changed.

His son read aloud:

“If you have money, you can go to a foreign school. I won’t give him a penny. This one yuan is like buying off the father-son relationship.”

Silence filled the apartment.

Khai Thanh whispered:

“I didn’t mean it literally.”

Minh Duong asked:

“Which part?”

His father had no answer.

“The one yuan?”

Nothing.

“Or buying off the relationship?”

Khai Thanh finally said:

“You’re still young. Adults say harsh things when they’re angry.”

Minh Duong smiled.

It was a very calm smile.

“I was ten when I needed braces.”

His father froze.

“I was fourteen when I wanted to attend math camp.”

Another pause.

“I was sixteen when I went to the hospital.”

Khai Thanh looked down.

Minh Duong continued:

“Were you angry all those years too?”

I turned away.

I didn’t want my son to see my eyes filling.

Khai Thanh put the laptop down.

“I can make it up to you.”

“No.”

“Minh Duong—”

“I don’t hate you.”

That seemed to give Khai Thanh hope.

Then the boy finished:

“But I stopped waiting for you a long time ago.”

Khai Thanh left the gifts behind.

Minh Duong donated the unopened laptop to his school’s student-support program.

The next humiliation came entirely from Khai Thanh himself.

At a family dinner a week later, he proudly announced that both of “his sons” had entered university.

Then he posted Minh Duong’s Harvard acceptance letter in the family group.

I had never sent it to him.

He had taken a screenshot from the school’s announcement.

His caption read:

“My oldest son did not disappoint the Luc family. Years of education have finally paid off.”

Minh Duong saw it.

For a long time, he said nothing.

Then he entered the group chat himself.

It was the first message he had sent there in almost two years.

“Thank you for the congratulations.”

A dozen relatives immediately responded.

Then Minh Duong added:

“For accuracy, I would like to clarify one thing.”

The group went silent.

“My mother paid for my education.”

“My teachers helped me prepare my applications.”

“My scholarships are covering my studies.”

“And yesterday my father sent one yuan to officially end his financial responsibility toward me.”

Then he attached the screenshot.

Nobody spoke for almost a minute.

Finally, one uncle wrote:

“Khai Thanh… is this real?”

To Uyen immediately replied:

“Family matters shouldn’t be exposed publicly.”

Minh Duong answered:

“I agree.”

“So please stop publicly taking credit for my life.”

I stared at the screen.

That was the moment I understood my son no longer needed me to fight every battle for him.

He could speak for himself.

Khai Thanh left the family group that night.

Months passed.

Khang Khang began university.

Minh Duong prepared to leave for America.

Two days before his flight, Khai Thanh appeared again.

This time, he brought nothing.

No laptop.

No envelopes.

No performance.

He stood downstairs and said:

“Can I talk to him for five minutes?”

I let Minh Duong decide.

He went down.

I stayed upstairs.

Twenty minutes later, my son returned alone.

“What did he say?”

“He apologized.”

I waited.

“And?”

Minh Duong shrugged.

“I accepted the apology.”

My heart softened.

Then he continued:

“But I told him forgiveness doesn’t turn sixteen years into a good childhood.”

I nodded.

He looked at me.

“Is that cruel?”

“No.”

“It feels a little cruel.”

“It’s honest.”

He thought about that.

Then smiled.

“Okay.”

At the airport, I tried not to cry.

I failed before we even reached security.

Minh Duong hugged me.

“Mom, Harvard is not another planet.”

“It feels farther.”

“I’ll call.”

“Every day?”

He laughed.

“No.”

“Ungrateful child.”

He hugged me tighter.

Then whispered:

“I got there because you never made me feel poor just because Dad refused to pay.”

That sentence broke me completely.

I watched him disappear through security.

The boy who had once been denied a math camp because his father claimed it was too expensive was leaving for one of the world’s most famous universities without owing that father a single cent.

Later, I noticed another bank notification.

One yuan.

From Luc Khai Thanh.

For a second, anger rose in me.

Then I read the note.

“Please give this to Minh Duong. Tell him I’m sorry.”

I stared at it.

Then transferred it back.

My message was simple:

“If you want a relationship with your son, don’t send money to me.”

“Call him.”

“Ask about his life.”

“And accept whatever answer he gives.”

That was the last time I ever acted as the bridge between them.

Whether they rebuilt anything afterward was no longer my responsibility.

For sixteen years, Khai Thanh believed fatherhood was measured by how much money he could avoid paying.

Then when Harvard appeared, he suddenly wanted the title back.

But children are not investments.

You cannot ignore them while they struggle and claim dividends when they succeed.

That one yuan did not buy off a father-son relationship.

The relationship had been disappearing little by little for years.

The coin merely gave it a receipt.

And Minh Duong?

He kept the screenshot.

Not because he hated his father.

But because, as he told me before boarding the plane:

“Whenever someone suddenly values me because of what I achieved, I want to remember who valued me before I achieved anything.”

I smiled through my tears.

Because this time, I knew exactly who he meant.

Me.