USPS temporarily suspends accepting packages from China and Hong Kong
The suspension is effective immediately, the USPS said. Letters and flats are not included in the suspension, it said.
The postal service did not provide a reason for the suspension or say how long it expects the suspension to last.
https://www.cbsnews.com/news/usps-suspends-packages-china-hong-kong/
They are stopping the packages from China because Trump ended the De minimis exception to customs.