You need a fully operational phone out of the box, rely on NFC payments (Google Pay), need 5G on specific carriers, and want a local warranty.
Alex missed important emails because notifications often failed to show on the lockscreen in the Chinese ROM. The Hardware "Heartbreak" oneplus 9 pro chinese version vs global version hot
Performance
The main reason the Chinese version is so "hot" is the price. You need a fully operational phone out of
The and the Global version (such as LE2123 rely on NFC payments (Google Pay)
Though both models support 5G, the are hard-baked into the hardware.