See the China People's Liberation Army Queue Regulations for details:
Chapter II Queue Command
Article 6 the queue command position
The command position should be convenient for the command and visible to all. Usually: stop room, in front of the center of the queue; During the journey, it is listed in front of the left center, on the left side or in front of the left side if necessary, and on the right side (right side) or behind the left side (right side) if necessary.
Article 7 Queue Command Law
Queue commanders usually use passwords. When traveling, except for turning left, the movement command falls on the left foot when it is exchanged with synchronous step and positive step, and everything else falls on the right foot. Change the command position, generally by running (using synchronous steps within 5 steps), after entering the predetermined position, establish a positive posture and give a password. When the column is marching, you can give the password while marching.
Article 8 Queue Command Requirements
(a) Whether the command position is correct;
(two) correct posture, full of energy and accurate movements;
(3) The password is accurate, clear and loud;
(four) count the number of people, check the dress, and carefully check the guns;
(5) Strict requirements and maintenance of queue discipline.