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

Against accounts of the same size

10 posts from the last 90 days, next to the 10K–100K follower range. below its peers on both reach and engagement.

Median views3 484this account2 578median for 10K–100K

Reach, %4.36%this account7.77%median for 10K–100K

Engagement, %0.73%this account1.47%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	3 484	2 578	1.35×
Reach (views ÷ followers)	4.36%	7.77%	0.56×
Engagement rate	0.73%	1.47%	0.50×

Others in this range → Compare with another account → How these benchmarks are built →

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 1.47%.

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.

Latest posts

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 04 Sep 2026 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 03 Sep 2026 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 03 Sep 2026 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 03 Sep 2026 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 03 Sep 2026 @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 03 Sep 2026 @ruima Not just drivers assistance. 504 views · 2 likes · 0 reposts · 0 replies 03 Sep 2026 @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 02 Sep 2026 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 02 Sep 2026 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 16 Aug 2026