Ki in Chinese / Japanese...

黑旗門 is often romanized as “Hek Ki Boen” in Cantonese, this is the title for a certain branch school of Wing Chun or Eng Chun martial arts.

闘気 is an alternate Japanese title for “fighting spirit.”

This one is more like “fighting energy.” The second character is “ki,” the same “ki” in Aikido. This “ki” is the spiritual energy that all martial arts practitioners must master and focus on.

Hapkido or 合氣道 is a mostly-defensive martial art in Korea.

Hapkido has some connection to the Aikido of Japan. They are written with the same characters in both languages. However, it should be noted that the Korean Hanja characters shown here are the traditional Chinese form - but in modern Japan, the middle character was slightly simplified.
Note: You can consider this to be the older Japanese written form of Aikido. Titles on older books and signs about Aikido use this form.

The connection between Japanese Aikido and Korean Hapkido is muddled in history. The issue is probably due to the difficult relationship between the two countries around WWII. Many Koreans became virtual slaves to the Japanese during that period. After WWII, many things in Korea were disassociated from having any Japanese origin. The relationship has greatly mellowed out now.

Looking at the characters, the first means “union” or “harmony.”
The second character means “universal energy” or “spirit.”
The third means “way” or “method.”
One way to translate this into English is the “Harmonizing Energy Method.” This makes sense, as Hapkido has more to do with redirecting energy than fighting strength against strength.

More Hapkido info

More notes:
1. Sometimes Hapkido is Romanized as “hap ki do,” “hapki-do” “hab gi do” or “hapgido.”

2. Korean Hanja characters are actually Chinese characters that usually hold the same meaning in both languages. There was a time when these characters were the standard and only written form of Korean. The development of modern Korean Hangul characters is a somewhat recent event in the greater scope of history. There was a time when Chinese characters were the written form of many languages in places known in modern times as North Korea, South Korea, Japan, Vietnam, Singapore, Hong Kong, Taiwan, Mainland China, and a significant portion of Malaysia. Even today, more people in the world can read Chinese characters than English.

3. While these Korean Hanja characters can be pronounced in Chinese, this word is not well-known in China and is not considered part of the Chinese lexicon.

暉 is a Kanji that often represents a Japanese name romanized as Hikari.

The literal meaning can be sunshine, light, or to shine upon. It has the same meaning in Chinese and Korean. From ancient Chinese, it is a variant of 輝/辉.

Other Japanese romanizations include Hikaru, Hikatsu, Teru, Terasu, Ki, and Akira.

This 氣 energy flow is a fundamental concept of traditional Asian culture.

氣 is romanized as “Qi” or “Chi” in Chinese, “Gi” in Korean, and “Ki” in Japanese.
Chi is believed to be part of everything that exists, as in “life force” or “spiritual energy.” It is most often translated as “energy flow” or literally as “air” or “breath.” Some people will simply translate this as “spirit,” but you must consider the kind of spirit we're talking about. I think this is weighted more toward energy than spirit.

The character itself is a representation of steam (or breath) rising from rice. To clarify, the character for rice looks like this:
Steam was apparently seen as visual evidence of the release of “life energy” when this concept was first developed. The Qi / Chi / Ki character is still used in compound words to mean steam or vapor.
The etymology of this character is a bit complicated. It's suggested that the first form of this character from bronze script (about 2500 years ago) looked like these samples:
However, it was easy to confuse this with the character for the number three. So the rice radical was added by 221 B.C. (the exact time of this change is debated). This first version with the rice radical looks like this:
The idea of Qi / Chi / Ki is really a philosophical concept. It's often used to refer to the “flow” of metaphysical energy that sustains living beings. Yet there is much debate that has continued for thousands of years as to whether Qi / Chi / Ki is pure energy or consists partially or fully of matter.

You can also see the character for Qi / Chi / Ki in common compound words such as Tai Chi / Tai Qi, Aikido, Reiki, and Qi Gong / Chi Kung.

In the modern Japanese Kanji, the rice radical has been changed into two strokes that form an X.

The original and traditional Chinese form is still understood in Japanese, but we can also offer that modern Kanji form in our custom calligraphy. If you want this Japanese Kanji, please click on the character to the right instead of the “Select and Customize” button above.

More language notes: This is pronounced like “chee” in Mandarin Chinese, and like “key” in Japanese.
This is also the same way to write this in Korean Hanja where it is Romanized as “gi” and pronounced like “gee” but with a real G-sound, not a J-sound.
Though Vietnamese no longer use Chinese characters in their daily language, this character is still widely known in Vietnam.

See Also:  Energy | Life Force | Vitality | Life | Birth | Soul

气剑体一致 often gets translated as “Mind Sword Body,” or “Spirit, Sword, and Body as One.” But I think these translations don't tell you enough about what this is really saying.

In this context, 気, which is the modern Japanese version of 氣, means spiritual and unseen energy or “life energy.” In some cases, 気 can be translated as spirit, feeling, or nature. If defined as the mind, it's more about the invisible or intangible parts of one's mind (or soul).

剣 is the Japanese version of 劍 meaning sword.

体 is the modern Japanese version of 體 meaning body.

The Kanji 一 means one, and in this case, suggests “all in one.” The Kanji 到 means to send, deliver, or convey. But together, 一到 suggests all these things in agreement, union cooperation, or in concert.

Note: Arguments exist as to whether this should be romanized as Kikentaiitchi, Kikentaiicchi, or kikentaiichi. Technically, if you drop the last character, you get 気剣体一 and kikentaiichi (ki ken tai ichi), which is also a valid phrase.

指圧道 is the title for Shiastu-Do, the Japanese way of finger pressure.

Shitsu-Do is about applying special finger pressure to points on the body thought to be connected to pathways called “meridians.” Shiatsu is a healthful way to get your 気 or 氣 (ki energy) flowing properly.

Note: This title can also be written in the older 指壓道 form (just the middle character has an ancient/traditional form used before WWII).
You might even see 指压道 which uses the Simplified Chinese form of the second character.

糸東流氣目館空手道 is the title for Shito-Ryu Ki-Me-Kan Karate-Do.
A school of Karate.

Note that while this title can be pronounced in Chinese, it only makes complete sense in Japanese.

気の強い means strong-willed or strong of heart in Japanese.

Here's the character breakdown of this Japanese title:
気 (ki) spirit; mind; heart; nature; motivation; intention; feelings; essence.
の (no) possessive particle.
強い (tsuyoi) strong; powerful; mighty; potent; resistant; resilient; durable.

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

気剣体一致 is the title Ki Ken-Tai Icchi.

気 = energy, 剣 = sword, 体 = body, 一致 = synchronization/unity. So, “energy, sword, and body in unison” would be one way to translate this. Sometimes written with the possessive article, の, making it 気剣体の一致 or “Ki Ken-Tai no Icchi.” Let me know in the special instructions if you want that の character added by the calligrapher.