Maxwell Fa's Enlightenment in the Monastery Chapter 107

In front of the general's platform, there are six large banners, and the yellow flag in the center is the tallest and most conspicuous.

"Shen Lang, that is the yellow flag representing the commander of the army. It is the master of the five-color flags. The other four-color flags are used to determine the direction and give orders."

Listening to Li Siye's explanation, Ethan Shen thought of the original words in Li Weigong's Art of War that Alexander Gao later gave him, "All armies will have five flags, each with its own color: red, south, fire; white, west, gold; black, north, water; green, east, wood; yellow, center, earth."

"Since the soil is immobile, it serves as the leader of the four flags. When the general moves, he will hold this yellow flag in front. If there are bandits in the east, west, south, or north, each raises a flag according to the color of the direction, and the soldiers in that direction must hurry up to dress. If the flag is forward, the soldiers in that direction must hurry up; if the flag is upright, they must stop; if it is lying down, they must retreat. Carefully observe the flag raised by the general and follow the order."

"Mr. Shen has really put a lot of thought into it. He has memorized the Art of War so well. I can't even compare to him."