Try to identify the following numbers on the picture

The travel date is 26 August.
The departure time is 8:14
The gate to get to the train is 3D.
The coach number is 4.
The seat number is 3a.
The price of the ticket ist 72 RMB.

G9564 is the train number. It is an important identifer because on the large display board in the waiting hall the city names will be in Chinese. You will identify your train by this number.

As you can see chinese trains have both USB and power sockets (with US type plugs)-

The video short shows the main waiting area after the security check.

The ticket was for one hour ride on a high speed train in the coach class