online access in china?
Even via vpn, cannot access anything online, including use of apple passcode
iPad Pro, iPadOS 17
You will very likely encounter difficulties with VPN connections to the internet from within China. The use of VPN technology within China is blocked by policy (a.k.a. the "Great Firewall of China").
An App found in the Apple App Store, reportedly very popular with those in your position, may help:
Shadowrocket: