Even if you book BUD-NGB-PVG with 1h55 min transit time in Ningbo - all in one ticket/PNR of course - you still have to grab your luggage from the conveyor belt and re-check it.

There is, according to MU/FM staff in Budapest without exception, no luggage transfer between flights in Ningbo. It does not exist yet.

But otoh NGB is a relatively small Airport.