1. There is an airplane number at the tail of the airplane. Boarding announcements are generally broadcast like this: Passengers who take flight XX (flight number) to XX (destination), please board flight XX (flight number) from XX (boarding slogan).

It doesn't matter if you don't know the flight number, as long as you know the boarding slogan. The boarding slogan is on the boarding pass and also on the guidance display screen of the terminal. Go straight along the boarding gate. There is usually only one plane at the end of the boarding gate, which is yours. Very few boarding gates have turnouts, which must be guided by someone or blocked by red lines to ensure that you won't take the wrong plane, so don't worry.

In case you get on the wrong plane, the airport will bear a lot of responsibility. You have no responsibility at all. Take care of your boarding pass, and the airport will arrange everything for you without spending a penny. Of course, you shouldn't get on the wrong plane on purpose.