In Jan. we have a flight from Amsterdam to Auckland

In the flight there are 2 stopovers: in Beiijng and in Guangzhou.
In Beijing we have 1.35 hours, we are afraid this is to short to take the connectet flight to Guangzhou. And we are not sure if we have to collect the baggage and check out and in again? In Guangzhou we have 3.15 hours, we think that is enough.
And what will be happen if we miss the flight to Guangzhou?

With kind regards,
Eatske Bosma.