Course Collection — Myopia, English, Kids, Digital Life

Course Collection — Myopia, English, Kids, Digital Life | Original

Home 2026.07

I’m offering a series of practical courses. 50 CNY per session (30 minutes). Pay per session, no package required. I’m happy to share what I’ve learned across five areas: myopia reversal, English learning, kid education, digital life, and software issue fix.

My Background

Male, born in 1995, Chinese citizen, resides in Guangzhou. Achieved top 300 in Guangdong NOIP 2011 and solved around 1000 algorithm problems online.
Previous experience includes LeanCloud, Beijing Square Root, Beyondsoft (outsourced to a Singapore bank), Farben Information (outsourced to a UK-based international bank) and a global IT outsourcing company (outsourced to a UK-based international bank).
Accumulated 12 years of professional experience. Specializes in mobile (Android, iOS) and full-stack engineering, with 1 year in machine learning/big data.
Good understanding of HTML, CSS, JavaScript, Vue, React, Angular, iOS/Android, Java, Spring, MySQL, Redis, distributed systems, and cloud platforms (Alibaba Cloud, AWS, Azure).
Fun Live — GitHub, a WeChat-powered technical live streaming platform for developers focusing on iOS, Android, backend, and AI content. Operated from 2016 to 2017 with around 30k users.
Personal blog — lzwjava.github.io, an AI-driven one-stop blog system with AI-powered translation and beyond. Operated from 2021 to present, ~60k monthly views (Cloudflare).
Native in Chinese, proficient in English (IELTS 6.5). Read over 320 books.
AI Enthusiast — trained small LLMs (nanoGPT) on H200, AMD MI300X and RTX 4070 GPUs, and built projects using OpenRouter and Claude Code (~3B tokens used).
More details: Resume · Software Portfolio · AI Portfolio · Life Portfolio

Course Format

50 CNY per session, 30 minutes each. Pay as you go — no upfront package.
One-to-one via Zoom or Tencent Meeting. Sessions are recorded.
Between sessions, quick text follow-ups (under 15 minutes) available outside sleep time.
Each session is self-contained — no homework required unless you want it.
You pick the topic each time. It’s your course.
Join a WeChat community of 3k+ engineers in China for networking and discussions. Contact via WeChat: lzwjava.

To enroll, send an email to lzwjava@gmail.com or add me on WeChat: lzwjava (same ID). Please include a brief introduction about yourself and what you’d like to learn.

Course 1: Myopia Reversal

I have spent over three years experimenting on myself to reverse myopia. Starting in March 2022, I’ve documented my prescription history, tested different reduction levels, and developed practical frameworks — not just theory.

What I Can Teach You

The “just barely clear” principle — the single most important concept for reversing myopia. How to pick the right prescription reduction so your eyes work correctly.
Why full-prescription glasses make myopia worse — most people wear glasses that are too strong for near work, causing their eyeballs to elongate further over time.
The multi-pair approach — keep a strong pair for driving and essential tasks, and a weaker pair (~150–200 degrees below full prescription) for phones, computers, and reading.
Progressive and bifocal lenses — what I tried, why it didn’t work for me, and how to decide if they’re right for you.
How to track your progress — simple methods to measure prescription changes at home, with realistic expectations (~0.25D reduction every three months).
Understanding your eye mechanics — how external eye muscles, lens flexibility, and axial length actually work in daily life.
My 3-year experiment data — real prescription measurements from 2022 to 2025, documented with timestamps.
The science — Todd Becker’s research, Yin Wang’s methods, and why near-work is the primary environmental driver of myopia.
Common mistakes — why “just take off your glasses” doesn’t work, the dangers of over-correction, and how to avoid the same pitfalls I hit.
Practical tips — ordering cheap glasses online (~60 RMB per pair), testing new prescriptions, and integrating the approach into daily life.

Sample Topics

Why wearing full prescription for phone/computer use is like wearing high heels to run a marathon
The 150-degree reduction rule and how to find your sweet spot
How to tell if you’re making progress without an optometrist visit
Astigmatism and myopia — why both changed in my experiment
Driving with under-corrected glasses — the real risks and how I hit a road divider
Hyperopia (farsightedness) as a sanity check — why the optical industry already accepts scenario-based prescriptions

Source Material

My findings are documented in several papers:

Course 2: English Learning

I went from poor English (IELTS 6, weak listening/writing/speaking) to daily professional use — enough to work at international banks and communicate fluently. My approach is built on immersion, not rote memorization.

What I Can Teach You

The immersion method — I spent 16 hours a day on English at my peak. I’ll show you how to integrate English into your existing routines without extra “study time.”
Tools that actually work — TikTok (international), YouTube, Netflix, Google Podcasts, Kindle — how to use each one effectively for language acquisition.
How I improved typing from 5 wpm to 20 wpm — the practical skill that unlocked English writing for work.
Overcoming the listening barrier — I went from “please speak slowly” to understanding fast native speech. The specific techniques that worked.
Reading real books — my journey through 15+ English books: Hackers and Painters, The Everything Store, Sapiens, The Feynman Lectures on Physics, and more.
Speaking practice — affordable options (18 CNY per 25-minute session with Filipino tutors on Pinduoduo), natural conversation strategies, and how to practice without a partner.
The brain-change effect — after enough immersion, your brain rewires. You stop translating and start thinking in English.
Why exam prep is optional — I improved far faster through genuine interest than through test preparation.
The 1000-word foundation — master a core vocabulary deeply before chasing rare words.
Dealing with the Great Firewall — practical workarounds for accessing English content in China.

Sample Topics

How to use TikTok as your primary English learning tool (yes, really)
Building a 16-hour English immersion day without burning out
From high school English to working in an international company — my timeline
Listening while doing other things: driving, cooking, walking
Finding Filipino tutors for 18 CNY per session on Pinduoduo
Reading Paul Graham’s essays with a dictionary — the exercise that changed everything

Source Material

My experience is documented in detail:

Complete Guide to Learning English: from high school English to IELTS 6.5
Sections cover: affordable practice with native speakers, the immersion method, extensive input strategies, and my full learning journey since 2014.

Course 3: Kid Education

I am raising my daughter (born 2021) in Guangzhou. She has accumulated roughly 500 hours of English animation exposure since age 2, and I’ve learned a lot about early childhood education through real parenting experience.

What I Can Teach You

The English-first strategy — why I prioritized English animations from age 2 and how I handle family disagreements about it.
Practical setup — Apple TV + Fire TV Stick + VPN for YouTube Kids in China. How to keep it working when the proxy goes down.
Why digital devices aren’t the enemy — my rebuttal to “screens are bad for kids.” The difference between passive consumption and active learning through English content.
Projecting the future — if every kid in China starts English immersion early, in 20 years the country could be like Singapore. The generational opportunity.
500 hours of English animation — what my daughter learned, how her brain changed, and what she can actually do.
Parenting philosophy — safety first, broaden perspectives, avoid forcing, encourage independence, foster curiosity, and teach practical skills.
Practical skills from age 3 — using a remote control, playing mobile games, interacting with ChatGPT via voice, unpacking deliveries.
Managing family dynamics — how to persuade skeptical relatives and spouses who don’t see the value.
Tools — YouTube Premium (download for car trips), Apple Arcade, Google Play Pass, and age-appropriate content curation.

Sample Topics

Why I give my 3-year-old a Google Pixel to watch English animations
The argument with my parents: Chinese vs English content for kids
What 500 hours of English animation actually looks like in a toddler
Building an English-rich environment in a Chinese household
Digital literacy for toddlers — my approach to screens

Source Material

English Animation Journey of My Daughter — full story with photos and parenting tips.

Course 4: Digital Life

I have curated my digital ecosystem over years. My home screen, daily apps, and workflow reflect a careful selection of tools that maximize productivity and learning.

What I Can Teach You

My essential apps and websites — ChatGPT, OpenRouter, GitHub, Apple ecosystem, TikTok, YouTube, Binance, Tiger Trade, VS Code, and more. Why each one made the cut.
How I organize my digital life — home screen layout, daily checklists, reading habits, and information consumption strategy.
Digital minimalism with purpose — cutting through the noise. I’m selective about what I use, and I can help you build your own curated system.
Connecting Chinese and global internet — how I navigate the Great Firewall to access tools like ChatGPT, YouTube, and international social media.
Personal blog as a digital hub — my blog system (lzwjava.github.io) serves as a one-stop AI-driven platform with translation, audio, and PDF generation.
Tools that changed how I think — AI assistants, crypto trading platforms, knowledge management, and learning resources.
Building vs consuming — how to shift from passive digital consumption to active creation using the tools you already have.

Sample Topics

My home screen tour — what’s on it and why
The 20 most useful websites I check daily
How I use AI tools (ChatGPT, Claude, Grok) in my daily workflow
Navigating digital tools across China and the global internet
Building a personal blog system with AI-powered features

Source Material

Most Useful Websites and Apps for Me — updated list with screenshots.

Course 5: Software Issue Fix

I’ve accumulated 12 years of professional experience across mobile (Android, iOS), full-stack engineering, cloud platforms, and AI. I can help with software issues on any platform — Linux, Windows, or macOS — from quick configuration tweaks to deep debugging sessions.

What I Can Help With

Any platform — Linux (Ubuntu, Fedora, Arch), macOS, Windows. Desktop, server, or embedded.
Difficult or easy — from “how do I install this package” to “why is my kernel module crashing.”
Open source preferred — I believe in open source solutions. If there’s a good FOSS tool for the job, that’s what I’ll recommend.
Half-hour sessions — many software issues can be diagnosed and fixed in 30 minutes. You describe the problem, I guide you through the solution live.
Mobile device issues (iOS/Android) — boot loops, app crashes, ADB/fastboot, jailbreaking/rooting concepts, sideloading, configuration profiles, and troubleshooting app behavior.
Development environment setup — compilers, interpreters, package managers, IDEs, emulators, simulators, and CI runners.
Network and connectivity — VPN, proxy, firewall, DNS, SSH tunneling, certificate issues, and debugging network stacks.
System administration — process management, logging, file permissions, disk space, systemd, cron, backups, and shell scripting.
Docker and containers — Dockerfiles, compose files, container networking, volume mounts, image optimization, and debugging containerized apps.
Performance and debugging — profiling CPU/memory/disk, reading stack traces, analyzing crash dumps, and fixing memory leaks.
Git and version control — merge conflicts, rebase disasters, submodule issues, lost commits, and workflow automation.
AI tooling issues — trouble with Ollama, llama.cpp, CUDA toolkit, GPU passthrough, model loading errors, or Python environment conflicts.

Sample Topics

“My Linux machine won’t boot after an update — help”
“Docker container keeps restarting and I don’t know why”
“How do I set up a development environment for Android on macOS?”
“My Wi-Fi keeps dropping on Ubuntu — what logs do I check?”
“I broke my git history with a bad rebase — can we fix it?”
“My Python virtualenv is broken after a macOS update”
“How do I sideload an app on my Android phone?”
“I want to run a local LLM but CUDA says out of memory”
“My iPhone won’t sync with iTunes / Finder”

Why 50 CNY / 30 min?

I want this to be accessible. 50 CNY is less than a bubble tea. One session is short enough to fit into a busy day but long enough to learn something concrete. You don’t commit to 10 lessons — just show up for what you need.

This is not a course. It’s coaching across five real areas where I have hands-on experience — myopia reversal, English learning, kid education, digital life, and software issue fix. You bring what you’re working on, and I help you get results.

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