VISA free transit

I want to verify if I can get a free transit for 72h or 24h.
Please, can you confirm this for me?

Departure KL891:
28-10 Amsterdam 20:55h
Arrival:
29-10 Chengdu 13:40h

Sleeping in Chengdu, Mercure Hotel Chengdu North. I'm not leaving Chengdu!

Departure CZ378:
30-10 Chengdu 8:35h
Arrival:
30-10 Guangzhou 10:45h

Guangzhou Airport, I will not leave the terminal area. I will walk directly to my next plane/flight.

Departure CZ335:
30-10 Guangzhou 14:30h
Arrival:
31-10 Auckland 06:40h

Thanks for your reaction!