One is the national flag of Japan, also known as the Japanese chapter flag and the sun flag, as shown in the following figure. It is rectangular, with a length-width ratio of 3:2. The gap between the top and bottom of the circle is the same. The diameter of the circle is three fifths of the length of the flag, and the center point of the circle coincides with the center point of the flag surface.

one is the rising sun flag, also known as the Japanese military flag, as shown in the following figure. It is a kind of flag with red sun and rising sun light pattern, and it is the military flag adopted by the former Japanese army and now the Japanese Self-Defense Force.

Japan's national flag is called Hinomaru, which comes from the Japanese word "Sun Maru", which literally means "Sun Circle". It is uncertain when the symbol of the sun circle was first used on flags and slogans. However, in the 12th century, samurai appeared. In the struggle for power between Minamoto and Taira, samurai liked to draw the sun circle on a folding fan (called gunsen in Japanese). During the Warring States Period in Japan in the 15th and 16th centuries, many military figures fought for spheres of influence, and the symbol of the sun flag was widely used as a military emblem.