At the Bird's Nest site (stands and infield)

Of course, the red area is far away, and the green area is the venue ticket. Basically, most of the time, the venue is not satisfied (late or unable to buy tickets). You can walk around the venue or have the opportunity to sit in the empty seat in the front. The red area is a seat ticket, so no matter how you run, you can't get into the venue. The advantage of red is that it is closer to the toilet.