Xiaomi's Xring O3 is manufactured by TSMC N3P process in Taiwan. [1]
MediaTek Dimensity 9500 is also manufactured by TSMC N3P process in Taiwan. [2]
There was no world interdependence change (unless one considers China and Taiwan to be the same countries).
[1] https://www.notebookcheck.net/Xiaomi-launches-XRing-O3-claim...
[2] https://www.notebookcheck.net/MediaTek-Dimensity-9500-Proces...
MediaTek is a Taiwanese company. Xiaomi could put any backdoor that the government tell them to install and TSMC won't be able to catch that.
> unless one considers China and Taiwan to be the same countries
The fact that the CCP is relaxed about core Chinese companies running their manufacturing in Taiwan might suggest that the CCP considers that it can make China and Taiwan one country, at a time of the CCP's choosing.