Hi, I am Mofei!

Blog

Coding and living,
in Finland.

Writing about engineering, life, and things I'm slowly figuring out.

Read articles in time order, or enter through story collections.

Codex at $100/Month: How I Used It as a Software Engineer Over the Past Month
Tech
May 5, 2026

Codex at $100/Month: How I Used It as a Software Engineer Over the Past Month

After upgrading Codex to the $100/month plan, I was not fully convinced myself. Then I looked through a month of history with it and realized the valuable part was not how much code it wrote, but how many unfinished things it helped me actually land in my projects.

Reads40Comments3
Read the full story
I Turned a Word-Guessing Game into an AI Skill
Tech
Apr 22, 2026

I Turned a Word-Guessing Game into an AI Skill

I turned a small semantic word-guessing game into an AI skill that can run directly in the terminal. This piece is about why the format fits LLMs so well, and how I constrained the model into becoming a stable game host.

Reads128Comments4
Read the full story
We Went to Tallinn Again Over the Easter Long Weekend
Life
Apr 6, 2026

We Went to Tallinn Again Over the Easter Long Weekend

Over the Easter long weekend, we drove onto a ferry and went to Tallinn with friends. For people living in Finland, it is an easy short trip and a great way to change the scenery with kids.

Reads106Comments5
Read the full story
That Day Phoebe Learned a Finnish Spell — and Came Home with Candy
Life
Apr 1, 2026

That Day Phoebe Learned a Finnish Spell — and Came Home with Candy

Before Easter, a simple note in the hallway quietly brought the whole building into a shared tradition. With their “magic wands,” children went door to door offering blessings—and returned with candy and a little more courage.

Reads74Comments5
Read the full story
West of Helsinki, There Is Finland’s Southernmost Reindeer Park
Life
Dec 20, 2025

West of Helsinki, There Is Finland’s Southernmost Reindeer Park

In the forests west of Helsinki lies a small place known as Finland’s southernmost reindeer park. Quiet and unassuming, it’s the kind of place where families can slow down on a weekend — feeding reindeer and warming their hands by the fire with a hot drink.

Reads160Comments10
Read the full story
Today, the Universe Gave Me an Hour
Life
Oct 26, 2025

Today, the Universe Gave Me an Hour

This morning, the light felt a little off. I glanced at the wall clock showing eight, then at my phone—it didn’t match. That’s when I remembered: winter time had begun. The clocks were turned back an hour, but that quiet sense of dissonance felt oddly real.

Reads197Comments5
Read the full story
Autumn in Finland has arrived | How about over there?
Life
Oct 17, 2025

Autumn in Finland has arrived | How about over there?

Autumn has quietly arrived in Finland, leaving the summer scenes of Porvoo behind. As we drove to Tampere, the trees outside transformed, whispering the stories of the changing seasons.

Reads135Comments7
Read the full story
In Finland’s Autumn Forest, I Found the Fairy-Tale Mushroom (It’s Poisonous)
Life
Oct 5, 2025

In Finland’s Autumn Forest, I Found the Fairy-Tale Mushroom (It’s Poisonous)

In my third autumn in Finland, I finally carried a basket into the forest. What I thought would be a simple mushroom hunt turned into an encounter with fairy tales, patience — and autumn itself.

Reads173Comments7
Read the full story
Hi, I am Mofei

Coding, and living with intention.

Subscribe
© 2012–2026 Mofei·Privacy·Terms
Life compiled in code