>>106384161
1.) This is old news
2.) It's been confirmed by on of the best chip analysis persons online who happens to be Mainland Chinese it is TSMC N3E. He would be boasting about domestic manufacturing if it actually was not TSMC, no reason not to hide it.
3.) US tried to implement sanctions against Xiaomi with the EDA ban before they rescinded it that would've stopped them from going lower than N3E.
https://www.gizmochina.com/2025/06/05/xiaomis-xring-chip-may-be-stuck-at-3nm-after-u-s-bans-eda-tool-exports/
I expect further action will be targeted against it if EDA isn't on the table.