Sounds like they're ready to call it an act of war 24 hrs after finding the damn things
They are the size of a pencil tip, so not noticeable at all with the human eye. They allow access to the servers/cloud within 30 plus major tech companies, where these motherboards reside. One or two of the Chinese subcontractors (manufacturer) working on these boards were compromised/coerced by the Chinese military to add the chips. Allegedly. ;o). Reported and denied several years ago and Bloomberg may have run the story without proper vetting. again allegedly.