Linfeng Yang
杨临风
Linfeng Yang is the co-founder and CEO of Onion Math (洋葱数学, later Onion Academy / 洋葱学园), an online education platform he started in late 2013 with Ruochen Zhu and Li Nuo . Before entrepreneurship, he worked at Boston Consulting Group and Microsoft, and in 2011 he and Zhu co-founded the rural education NGO "Sunshine Bookhouse" (阳光书屋) while still students—Yang at Harvard, Zhu at Duke . The company took a methodical approach: per a 2026 FreeS Fund piece, they spent two years refining middle-school math content, with each video requiring eight weeks of production . FreeS Fund's Li Feng (李丰) was among their early backers .
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Coverage
If mobile internet failed to reshape the education industry, can AI?
In a future where AI "controls" knowledge, how do we protect children's capacity for autonomous learning?
How to Navigate Black Swans: We Spoke with Six Founders
Through the Hundreds of Hardships of Entrepreneurship: A Founder Must Be a Problem-Solver
Returning to China to Start a Business? Answers to Questions You Did — and Didn't — Think to Ask | Recap of FreeS Fund's First Open Day
Have ideals, but don't be idealistic.
The First FreeS Fund Open Day Is Here: If You're Thinking About Coming Back to China to Work or Start a Company, Come Hang Out at FreeS Fund --- In recent years, we've noticed more and more people overseas considering a return to China — whether to join a startup, start their own, or simply explore what's happening on the ground. If you're one of them, we'd love to meet you. FreeS Fund is hosting our first Open Day for returnees. No rigid agenda, no pressure. Just a chance to chat with our team, hear what we're seeing in the market, and share what you're working on or thinking through. **When:** [Date] **Where:** FreeS Fund office, Beijing **Who should come:** Anyone currently based overseas who's considering moving back to China for work or entrepreneurship Space is limited. If you're interested, drop us a line at [email] with a quick note on your background and what you're exploring. Looking forward to meeting you.
On the path of growth, we're bound to meet fellow travelers who share our passions.
618 Sales Roundup, World's Smartest Companies... 16 Updates and 7 Insights | FreeS Fund Blackboard · June
Do what's right, not what's easy.
Landing in Shanghai, Selling 100 Million Bags in 7 Months... 7 Companies Reach New Heights, Plus 4 Awards | FreeS Fund Blackboard · May
Do what's right, not what's easy.
Youth Takes Center Stage: 18 Career Advances and 20 Awards to Share | FreeS Fund Blackboard · April
May is May — and with it, infinite possibilities.
Onion Math Closes 300 Million Yuan Series D Round, FreeS Fund Continues to Follow On | FreeS Fund Deal News
Internet-based inclusive education focused on primary and secondary school students
How Will New Technologies Transform the Trillion-Dollar Education Market? | FreeS Fund 2019 CEO Annual Meeting
The Triumph of Education: Crossing the Triple Threshold of People, Technology, and Environment
Be Long-Term Greedy, Be a True Hero | FreeS Fund 2019 CEO Annual Meeting
Let's Go Further Together
IPO, 7 Insights, 20+ Awards... In 2019, We Continued to "Do What's Right, Not What's Easy" | FreeS Fund Blackboard · December
A new year to stay grounded and keep pushing forward.
Breaking Through Technical Bottlenecks, Surpassing 20 Million Followers... 16 Takeaways and 5 Insights | FreeS Fund Blackboard · November
Continue doubling down on consumer and deep tech.
Top 5/15/50/100, Going Global to India, Teaming Up with Tencent on IVI... 13 Takeaways and 8 Insights | FreeS Chalkboard · August
"Choose the more long-term path, even if it's the harder one."
Onion Math Closes Series C Funding of Over 100 Million RMB to Expand Unmanned K-12 Science Tutoring | FreeS Fund Deal News
You can't reach a new world by following an old map. Onion Math ushers in the Online Education 3.0 era.
创业永处战时，11位CEO谈人性、谋虑与担当 | 2018峰瑞CEO年会回顾
除了不放弃，还要有逆流而上的能力。
Go Explore, Go Strive, Go Persist | 2018 FreeS Fund CEO Annual Meeting Recap
Here, you'll meet more fellow travelers.
Can Paid Content Buy You Real Knowledge? Can Online Education Fix That? | FreeS Fund Free Talk
What Should the New Intellectual Youth Study?
![The First FreeS Fund Open Day Is Here: If You're Thinking About Coming Back to China to Work or Start a Company, Come Hang Out at FreeS Fund
---
In recent years, we've noticed more and more people overseas considering a return to China — whether to join a startup, start their own, or simply explore what's happening on the ground. If you're one of them, we'd love to meet you.
FreeS Fund is hosting our first Open Day for returnees. No rigid agenda, no pressure. Just a chance to chat with our team, hear what we're seeing in the market, and share what you're working on or thinking through.
**When:** [Date]
**Where:** FreeS Fund office, Beijing
**Who should come:** Anyone currently based overseas who's considering moving back to China for work or entrepreneurship
Space is limited. If you're interested, drop us a line at [email] with a quick note on your background and what you're exploring.
Looking forward to meeting you.](/_next/image?url=https%3A%2F%2Fkkcktdhgzddmdjdjoenc.supabase.co%2Fstorage%2Fv1%2Fobject%2Fpublic%2Fmedia%2Fimages%2F45f83c6a-7c35-4040-ba2d-210c7948ac95%2F3e49df2ae02b.jpg&w=384&q=75)
