The name Eye for an Eye in Chinese / Japanese...

以眼還眼 is the same proverb that seems to be used in virtually every language and culture worldwide.

Whether you are Arab, Persian, Jewish, European, British, Asian, or American, this proverb is well known as the “original form of justice.”

Here's the full proverb, 以牙还牙以眼还眼, with the first and second parts.

However, in Chinese, it's more natural to put the “tooth” part first, so this more accurately reads “Tooth for a tooth, eye for an eye.”

If revenge is important to you, I suppose this is the phase you want on your wall.

伊斯蘭教 both means and sounds like “Islam” in Mandarin Chinese.

The first three characters sound like the word “Islam,” and the last character means “religion” or “teaching.” It's the most general term for “Islam” in China. The highest concentration of Muslims in China is Xinjiang (the vast region in northwest China that was called The East Turkistan Republic until 1949 and is sometimes called Chinese Turkistan, Uyghuristan). Here you will find Uygurs, Kazakhs, Kyrgyz, and others that are descendants of Turkmen (possibly mixed with Persians and Arabs). Many of their ancestors were traders who traveled the silk road to buy and sell spices and silk and exchange other goods from the Orient and the Middle East.

I spent some time in Xinjiang and got to know this community. They are strong people who can endure much. They are friendly and love to have a good time. I was a stranger but was treated by villagers (near China's border with Afghanistan) as if I was a good friend.
However, I have heard that it's best not to cross them, as in this land, the law is the blade, and everything is “eye for an eye.” The Chinese government has little control in Xinjiang, with almost no police officers except in the capital of Urumqi (so it's a 60-hour roundtrip train ride to seek the aid of law enforcement in most cases).

While few seem devout, there are at least small mosques in every village. And you will never see a man or woman outside without a head covering.

It should be noted that these people are all citizens of China, but they are officially of the Caucasian race. A visit to Xinjiang will change your idea of what it means to be Chinese.

以牙還牙 is a phrase that often goes with “An eye for an eye,” even in Chinese. Revenge seems to cross all languages, cultures, and even species (animals are known to take revenge too).

If a Chinese person uses just one part of the full proverb, it will be this “tooth for a tooth” one. Although, we are more likely to say “eye for an eye” alone in English.

Chinese people may also read this with the meaning of “Bite me, and I will bite you back.” However, it literally means “tooth for a tooth” or “you take my tooth, I take yours.”