Arriving by China Southern CSN 360 and connecting CSN 621 at Guangzhou Baiyun Airport

You can enjoy the 24-hour free policy, so you don’t need a transit visa. As you baggage, you need to confirm with your airline company whether you can enjoy the Baggage Check-through Service. If you can, then you don’t need to reclaim your baggage and it will be sent to the last destination. Otherwise, you will need to claim and recheck it by yourself.
May I know where you will start from and head for? Then I can make sure which type transfer you will go through and I will give you the specific procedures.