So I have an air china flight that's from seoul to nyc but there's a layover/flight transfer/whatever in beijing. However, there's only 2 hours and 20 minutes in beijing. Is that enough time? I've never had to do layovers before nor have I ever been to the beijing airport. I'm a college student studying abroad and traveling myself. I bought my ticket like this directly from air china...so air china should know if it's enough time or not to put the tickets out like this, right?