Shanghai Pudong Airport flies to Knoxville, USA with a stopover in Detroit. Delta Air Lines wants to know the specific transfer process and whether it needs to be re-inspected.

1) On the plane from Shanghai to Detroit International Airport, fill in the I-94 form and customs declaration form (issued to passengers by flight attendants). Although there are Chinese forms, these two forms must be filled in English. It is necessary to bring a pen because you have to fill out the form.

2) Arrive at Detroit International Airport (airport code: DTW). All inbound international flights stop at Hall A, and follow the people after disembarking. There is only one way to reach the "arrival hall" (Hall A is on the 4th floor, and the arrival hall is on the ll floor, which is the lowest floor). Queue in the "Entry Hall" [There are two different ways to queue: one is American citizens and green card holders, and the other is non-immigrant visitors]. If you don't know which line to queue, ask the people from China who arrived on the same plane. There are many people in China.

See the officials of the Department of Homeland Security, hand over I-94, show your passport and customs declaration form, and other materials (such as B 1/B2 visa, you must show your round-trip air ticket; F 1 visa, show me I-20; J- 1 visa, you must show DS-20 19) and press your fingerprint. Officials of the US Department of Homeland Security may ask a few questions, and sometimes ask nothing.

With the official approval, the half chapter of I-94 should be affixed to your passport (this half chapter of I-94 is very important, so don't lose it when you leave the United States). Get your passport, documents and customs declaration back.

This procedure, with many people waiting in line, takes a long time and few people, about half an hour or so.

3) Enter the "baggage claim area for international flights" by arriving at the lobby. There is only one door. Come out. Pick up your baggage on the baggage carousel of your flight.

4) After the customs inspection, they submit the customs report and conduct spot checks.

There are three situations: one possibility is that the customs officer receives your customs declaration form and then waves his hand and points to a direct corridor. You go, you leave from the next channel; On the other hand, they accept your customs declaration form, point their hands in the direction of the inspection machine, and ask you to put your luggage (all luggage, including checked luggage and carry-on luggage) on the conveyor belt of the inspection machine. You put your luggage on the conveyor belt of the inspection machine according to the requirements of the customs officers. After the luggage came, no one looked for you, so you put it on the cart and left. There is a third possibility. After the machine inspection, some customs officers ask for unpacking inspection. You have to take all your luggage to the customs inspection counter and open it on the spot for them to check. As long as it is not the third case, generally speaking, 10 for several minutes. If it is unpacking inspection, it is difficult to estimate the time. Generally speaking, most of them are the second case.

5) If you buy a joint flight ticket from Shanghai Pudong Airport to Knoxville, you should directly hand it over to the baggage handler (be careful not to damage or lose the airline baggage tag on your baggage and the baggage ticket attached to your ticket, which has the names of the departure airport and destination airport of your baggage). Look for your airline's conveyor belt (if it is Delta DL, give it to DL)[ just at the exit of the customs inspection office, with obvious signs and staff of their airlines next to it] and post it.

Then it passes through the security door, and a security guard passes through it with a metal detector. After the security door, it is the escalator. After going up, turn right and you will see a tunnel.

You bought a ticket on DL Airlines from China and Shanghai to Knoxville. Generally speaking, when boarding at China Airport, the check-in counter will give you the boarding pass for connecting flights from Shanghai Pudong Airport (airport code PVG) to Detroit (airport code DTW) and Detroit. The boarding pass has the flight number of Detroit Knoxville Airport and the boarding gate number of Detroit DTW International Airport. If there is no boarding gate number (there must be a flight number), you can see the boarding gate corresponding to the Detroit-Knoxville flight by looking at the flight indication TV screen of Detroit Airport and comparing your flight number.

After the escalator, there is a big tunnel on the right hand side, a long big tunnel, leading to B and C (if your boarding gate is B B×××× or C C×××, just go this way and cross a colorful lantern tunnel, and you will reach the junction of B and C). If you go to A (if your boarding gate is A ××, take this road), it seems that the escalator turns left, which is a short tunnel.

Plaza A is very big and has an indoor light rail. If the gate is far away, you can take the small train at home. If you don't want to take the light rail, you can walk there.

Detroit airport will often broadcast a sentence in Chinese, "Please check the time. What time is it in Detroit? " Only this sentence is in Chinese (because different parts of the United States implement different time zones). The signs of the airport (icons and English) are very clear and numerous.