Rui Ma ✓

@ruima · San Francisco, CA · joined 10 Jan 2008

AI, EVs, Robotics, Education, China. Mom. Also I help edit @techbuzzchina. Views personal. Ask me anything

79 870Followers

898Following

2 488Posts total

63.6KViews on collected posts

Posts recentes

Rui Ma ✓@ruima4 Sep

I finally got around to reading the August 12 @latepostnews article by @ChengManqi on distillation. It covers black-box versus white-box distillation, meaning outputs only versus access to internal model signals, and on-policy versus off-policy, meaning student-generated answers 1.4K views · 3 likes · 0 reposts · 0 replies Open on X →

Rui Ma ✓@ruima3 Sep

Talked to a parent whose kids just started in one of the new Alpha schools, and it's giving me a lot more confidence to homeschool. 1. The starting classes are tiny, just a handful. I would be starting with a pod of about the same number 2. It's really about the guides 4.9K views · 23 likes · 0 reposts · 3 replies Open on X →

Rui Ma ✓@ruima3 Sep

But but but China doesn't understand the risks of AI at all, because this list doesn't include a superintelligence that will just wipe us out! 4.7K views · 36 likes · 1 reposts · 0 replies Open on X →

Rui Ma ✓@ruima3 Sep

Wang Lihong, a senior official at the central Cyberspace Administration of China (CAC), told state broadcaster CCTV recently that the five main AI safety/security risks today are: 1. Inherent technical vulnerabilities i.e. deep learning algorithms that lack explainability; http 18.6K views · 56 likes · 13 reposts · 1 replies Open on X →

Rui Ma ✓@ruima3 Sep

A friend in China and I were talking about how pretty much all the Chinese content creators he knows are trying to become solopreneurs. It is just so much easier working with AI than having to manage a team for what is honestly kind of a volatile and super competitive business 2.2K views · 19 likes · 1 reposts · 1 replies Open on X →

Rui Ma ✓@ruima3 Sep

@ruima Interesting. This will make it increasingly difficult for Tesla to sell FSD in China as an extra. It does appear as "FSD" functionality will be included as a standard feature, in China first and perhaps in the U.S. last (after Europe and many other countries). 127 views · 1 likes · 0 reposts · 0 replies Open on X →

Rui Ma ✓@ruima3 Sep

@ruima Not just drivers assistance. 504 views · 2 likes · 0 reposts · 0 replies Open on X →

Rui Ma ✓@ruima2 Sep

@ruima It's a must have, and one of the most involuted spaces competitively with every solution there is pushing out updates, major updates every few months. 284 views · 3 likes · 0 reposts · 1 replies Open on X →

Rui Ma ✓@ruima2 Sep

One underappreciated change in China: nearly 40% of new cars sold in H1 2026 came with L2+ or L2++ driving assistance. Roughly speaking, L2+ is like highway-focused FSD: highway navigation, lane changes, ramps. L2++ is closer to today’s FSD (Supervised), extending that 16K views · 114 likes · 17 reposts · 10 replies Open on X →

Rui Ma ✓@ruima16 Aug

A lot more people are organizing China tech trips these days, which I actually think is great. More people should come see what’s happening here firsthand. But here’s what I think makes @techbuzzchina different: deep domain expertise. Our trips didn’t start as tours. They grew 14.8K views · 88 likes · 5 reposts · 7 replies Open on X →

Em comparação com contas do mesmo porte

10 posts dos últimos 90 dias, ao lado da faixa de 10K–100K seguidores. alcance comum para o seu porte, reação mais fraca que a maioria.

Mediana de visualizações3 484esta conta924mediana para 10K–100K

Alcance, %4.36%esta conta3.62%mediana para 10K–100K

Engajamento, %0.73%esta conta1.52%mediana para 10K–100K

Métrica	Esta conta	Mediana para 10K–100K	Proporção
Mediana de visualizações por post	3 484	924	3.77×
Alcance (visualizações ÷ seguidores)	4.36%	3.62%	1.21×
Taxa de engajamento	0.73%	1.52%	0.48×

Outras contas desta faixa → Comparar com outra conta → Como estas referências são construídas →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

14.8K16 Aug

16K2 Sep

284

5043 Sep

127

2.2K

18.6K

4.7K

4.9K

1.4K4 Sep

Last 10 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.68%16 Aug

0.90%2 Sep

1.41%

0.40%3 Sep

0.79%

0.94%

0.42%

0.78%

0.55%

0.22%4 Sep

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.52%.

What the audience does

Likes70.1%345 in total

Reposts7.5%37 in total

Replies4.7%23 in total

Quotes2.6%13 in total

Bookmarks15.0%74 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.

Posts recentes

Em comparação com contas do mesmo porte

Growth & engagement

Views per post

Engagement rate per post

What the audience does

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