How to determine which window to pick up the boarding pass when booking a plane ticket online?

Book an air ticket online, and you will receive a confirmation message after booking, which will tell you the relevant information of the air ticket: airline, flight number, departure time, etc. According to your flight number, you can know which airline you are flying (for example, Shandong Airlines code SC, China Southern Airlines code CZ and China Eastern Airlines code MU). When you arrive at the airport, you can use your ID card to get your boarding pass at the airline window. You can also use your ID card to print your boarding pass on the automatic boarding pass printing equipment at the airport. The picture shows the airline code logo for your reference.