The seating arrangement of Beijing Bird's Nest is divided into several areas. Among them, A 1 regional seat numbers are arranged from west to east and from north to south along the stands. For example, A 1-A4, B 1-B4, C 1-C4, D 1-D4 are arranged as 1-4 respectively, and J 1-J 10 respectively.
If you need more detailed seat number information, I suggest you contact the official customer service or ticketing center of Beijing Bird's Nest for consultation.