What is the flag of apan?

The ancient Japanese worshiped the sun god, so they regarded the sun as their totem. According to legend, at the beginning of the 7th century, Shoto Kutaishi of Japan wrote in his letter to Emperor Yangdi: "Where the sun comes from, the son of heaven goes to the son of heaven at sunset", which is the embryonic form of Japanese country name. It was not until the second half of the seventh century that the Japanese envoy to the Tang Dynasty changed its country name to "Japan", which means "the place where the sun rises", and then it was used as the official country name of Japan. In the 8th century A.D., the Japanese Emperor began to use the Japanese flag, which was then called the "Emperor's Flag". Since the mid-19th century, the Sun Flag has gradually become the flag representing Japan, which is what all Japanese ships hang. In 187, it was officially designated as the national flag of the Japanese navy. The red circle symbolizes the sun. 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, there was a power struggle between Minamoto and Taira in the samurai group, and the samurai liked to draw the sun circle on the folding fan (called gunsen in Japanese).