King of Kings in Chinese / Japanese...

皇帝 means emperor in Chinese, Japanese, and old Korean.

From times of old, the emperors of Asia ruled under the authority of God himself. One definition of an emperor is a ruler put in power by God. This definition separates emperors from the various kings in Chinese history (although defining who is a king versus an emperor gets vague sometimes).

Occasionally, the emperor's wife was widowed, and she took the role of an empress until her death (see our entry for empress if that is what you are looking for).

See Also:  Empress | King | Queen

五十步笑百步 is a Chinese proverb that means the one who retreats 50 paces mocks the one who retreats 100 paces.

During the Warring States Period of what is now China (475 - 221 B.C.), the King of Wei was in love with war. He often fought with other kingdoms just for spite or fun.

One day, the King of Wei asked the philosopher Mencius, “I love my people, and all say I do the best for them. I move the people from famine-stricken areas to places of plenty and transport grains from rich areas to the poor. Nobody goes hungry in my kingdom, and I treat my people far better than other kings. But why does the population of my kingdom not increase, and why does the population of other kingdoms not decrease?”

Mencius answered, “Since you love war, I will make this example: When going to war, and the drums beat to start the attack, some soldiers flee for their lives in fear. Some run 100 paces in retreat, and others run 50 steps. Then the ones who retreated 50 paces laugh and taunt those who retreated 100 paces, calling them cowards mortally afraid of death. Do you think this is reasonable?

The King of Wei answered, “Of course not! Those who run 50 paces are just as timid as those who run 100 paces.”

Mencius then said, “You are a king who treats his subjects better than other kings treat their people, but you are so fond of war that your people suffer from great losses in battle. Therefore, your population does not grow. While other kings allow their people to starve to death, you send your people to die in war. Is there any difference?”

This famous conversation led to the six-character proverb shown here. It serves as a warning to avoid hypocrisy. It goes hand-in-hand with the western phrase, “The pot calls the kettle black,” or the Biblical phrase, “Before trying to remove a splinter from your neighbor's eye, first remove the plank from your own eye.”

The most literal translation to English of this ancient 前事不忘后事之师 Chinese proverb is:
“Past events not forgotten serve as teachers for later events.”

However, it's been translated several ways:
Don't forget past events, they can guide you in the future.
Benefit from past experience.
Past experience, if not forgotten, is a guide for the future.
Past calamity is my teacher.
A good memory for the past is a teacher for the future.
The remembrance of the past is the teacher of the future.
If one remembers the lessons of the past; They will serve as a guide to avoid mistakes in the future.

The origin:
This proverb comes from the 5th century B.C., just before the Warring States Period in the territory now known as China.
The head of the State of Jin, Zhi Bo, seized power in a coup. He did this with help from the armies of the State of Han and Wei. Instead of being grateful for the help from Han and Wei, he treacherously took the land of Han and Wei. Never satisfied, Zhi Bo employed the armies of Han and Wei to attack and seize the State of Zhao.

The king of Zhao took advice from his minister Zhang Mengtan and secretly contacted the Han and Wei armies to reverse their plans and attack the army of Zhi Bo instead. The plan was successful, and the State of Zhao was not only saved but was set to become a powerful kingdom in the region.

Zhang Mengtan immediately submitted his resignation to a confused king of Zhao. When asked why, Zhang Mengtan said, “I've done my duty to save my kingdom, but looking back at past experience, I know sovereign kings are never satisfied with the power or land at hand. They will join others and fight for more power and more land. I must learn from past experiences, as those experiences are the teachers of future events.”
The king could not dispute the logic in that statement and accepted Zhang Mengtan's resignation.

For generations, the State of Zhao continued to fight for power and land until finally defeated and decimated by the State of Qin (which led to the birth of the Qin Dynasty in 221 B.C.).