Vincent_Yan404

As far as I know, yes. The most critical component—the Uranium-235 core—was finished in 404. In Part I, I mentioned a legendary machinist named Yuan Gongpu. He was tasked with the final precision turning of the core on a lathe.

It’s famously known as the 'Final Three Cuts.' Because the material was so rare and the stakes so high, he had to complete the final shaping in three extremely delicate stages. He achieved a precision of 0.001mm (often described as 1/80th of a human hair) entirely by hand. This earned him the nickname 'Yuan the Three-Cuts' (Yuan Sandao) in our hometown history

Thank you for sharing that. Our hometowns were built as means to an end—political or military missions—rather than places meant to last for people. To us, it was our entire world; to the state, it was just a tool. That’s why our personal memories and that sense of disorientation are never truly valued by the powers that be. We are left to wander the ruins of a history that has already moved on.

Thanks for linking the first part. I really appreciate the support from this community.

I published this in China, they didn't bother me, so I hope it's fine here.

I asked AI where should I publish my article, it said Medium at first. I submitted to illustration and 10 days later, the article is still pending review right now. So I ask AI again, what should I do? It says HN is the best but also toughest, it's hard to show in the front page. After I tried, I think I kinda made it.

You can see 553 条评论，And click “最新”

Cause I've never thought it before, and now I'm in Canada,I want to try whether this can be related in western country.

Thank you for your kindness,I feel exciting to communicate with people from different culture.

Wow It's amazing,I really don't know this before.Thanks for sharing!