International flights at Pudong Airport are transferred to domestic flights.

You don't have to pick up your checked baggage and apply for a joint ticket again. First, get off the plane at T2 and go through the border customs. After entering the country, pick up your luggage. Then take the free bus from T2 to T 1 and T 1 to check in and deliver the checked baggage. Then go through security to find the boarding gate. The time depends on whether you come back during the rush hour. If you are quick enough, you can get it all done in an hour or so. Now as long as you have nothing to declare, the customs will go directly to the green channel. All luggage can pass through the X-ray machine without long stay, and it can be cleared in 1 minute. You should mean the border inspection. If the border inspection may take a long time during peak hours, it should generally take 10 to 20 minutes. Don't take too much milk powder, 2-3 cans. At present, the card is strictly restricted in Shenzhen, especially at land checkpoints. Other places in the mainland are ok, but you can't bring too much milk powder. If you are asked at customs, you can directly say that it is for children to drink.