The name Iron Palm in Chinese / Japanese...

鐵掌 means “iron palm,” the martial arts technique taught by Brian Gray and others.

This term can mean different things to different people. The consensus is that rather than a type or style of martial arts, this is a technique for refining hand position and strengthening hands to strike blows with maximum force and effect.

The regime may include herbal treatments and special exercises to fortify the hands.

In more extreme versions, the carpals and metacarpal bones in the hand are systematically broken so that when they heal, they will become stronger.

Japanese note: This does make sense in Japanese (though the version shown above is the ancient form of the first Kanji), this is far from a commonly-known term.

鉄心石腸 is a Japanese proverb that suggests you should have the inner-strength and will as hard and steadfast as iron.

It's the Japanese way of saying, “stay strong.” This is an especially uplifting thing to say to a person in distress or recovering from a disaster. It's kind of the survivor's creed.

If you literally translate this, it means “iron will, stone guts” or “iron heart, rock-hard bowels.”

掌上明珠 is a Chinese proverb that literally means “a pearl in the palm.”

Figuratively, this is used to describe, or as a title for, a beloved person. This can especially apply to a daughter.

鐵心 can be translated as “iron heart,” “steel core,” or “iron mind” in Chinese and Japanese Kanji.

This is not a common term, but I added it here since so many were looking for “iron heart.” This is almost like saying you are without emotions or feelings - a very stoic person. This is not a Buddhist trait.

鐵龍 is the title Iron Dragon in Chinese.

鋼鐵俠 is the Chinese title for Iron Man, the comic book superhero.

鐵拳 is a common theme used by various schools of martial arts.

鐵 means “iron” but, in some cases, can mean “indisputable.”
拳 means fist.

Some schools use the older/Taiwanese way to Romanize the iron fist, so you may have seen it spelled “Tieh Chuan” instead of “Tie Quan.” Neither way is technically incorrect.

Note that in Mandarin, the first part of the first character sounds like the English word “tea,” blending into a soft “-eh” sound. The second character sounds a lot like “chew on” but as if it is one syllable.

After WWII in Japan, the Kanji for iron was simplified. This new Kanji form is shown to the right. If you want this modern Japanese version, please click on the Kanji to the right, instead of the button above. The characters shown to the left would still be considered the old or ancient Japanese version of this title.

鉄人 is a Japanese title that means iron man or strong man.

鉄人 is sometimes used as a given name romanized as Tetsujin, Temujin, Tetsundo, Tetsuhito, or Tetsuto.

磨杵成針 is a Chinese proverb that means “to grind an iron bar down to a fine needle,” or “Even a bar of iron can be ground down to a needle [with perseverance].”

Figuratively, this means to persevere in a difficult task or to study diligently.

乘勢 is a short Chinese word that means to “seize the opportunity” and is similar to the English provers, “to strike while the iron is hot.”

百折不屈 is a Korean proverb that means “indomitable spirit,” at least, that is the way it is commonly translated in martial arts circles (Taekwondo, Hapkido, etc.).

The literal translation is “[one] hundred [times] broken [still] don't succumb.”
Or more naturally translated, “Even if attacked/beaten one hundred times, still be undaunted/indomitable.”

Notes:
Some will say this is one long word rather than a proverb.
This is also a proverb/word in Chinese though rarely used in modern times.

不屈 is the short form of a longer Chinese word and also a word used in Korean and Japanese to express the idea of being indomitable. It literally means “will not bend,” “will not crouch,” “will not yield,” “will not flinch,” or “will not submit.”

Note: Some will translate this as “indomitable spirit”; however, technically, there is no character to suggest the idea of “spirit” in this word.

See Also:  Tenacity | Fortitude | Strength | Undaunted

負けじ魂 is a Japanese proverb that means “indomitable spirit” or “unyielding spirit.”

Note: Because this selection contains some special Japanese Hiragana characters, it should be written by a Japanese calligrapher.

不屈不撓 means “Indomitable” or “Unyielding.”

不屈不撓 is a long word by Chinese standards. At least, it is often translated as a single word into English. It's actually a proverb in Chinese.

If you want to break it down, you can see that the first and third characters are the same. Both mean “not” (they work as a suffix to make a negative or opposite meaning to whatever character follows).

The second character means “bendable.”

The last means “scratched” or “bothered.”

So this really means “Won't be bent, can't be bothered.” I have also seen it written as “Will not crouch, will not submit.” This comes from the fact that the second character can mean “to crouch” and the last can mean “to submit” (as in “to give in” such as “submitting to the rule of someone else”). This may explain better why these four characters mean “indomitable.”

Notes:
Some will translate this as “indomitable spirit”; however, technically, there is no character to suggest the idea of “spirit” in this word.
Other translations include indefatigability, indomitableness, or unremitting tenacity.

The first two characters can be stand-alone words in Chinese.
In Japanese, this is considered two words (with very similar meanings). It's more common to see the word order flipped to 不撓不屈 in Japanese.
The same characters are used in old Korean Hanja. Just like in Japanese, the words are swapped to 不撓不屈 creating a word pronounced “불요불굴” in Korean.

See 不撓不屈

See Also:  Tenacity | Fortitude | Strength | Undaunted