Fudoshin in Chinese / Japanese...

不動心流 can be translated as “Fudoshin-Ryu,” or “Immovable Mind Style.”

不動心拳法 can be translated as “Fudoshin Kenpo/Kempo,” or “Immovable Mind Fist Law.”

不動心協会 can be translated as “Fudoshin Association,” or “Immovable Mind Association,” depending on usage.

不動心会 can be translated as “Fudoshin-Kai,” “Immovable Mind Association,” or “Unwavering Society,” depending on usage.

不動心道場 can be translated as “Fudoshin Dojo,” or “Immovable Mind Hall,” depending on usage.

不動心 = Fudoshin or immovable mind.
道場 = Dojo or training hall.

不動心 is one of the five spirits of the warrior (budo) and is often used as a Japanese martial arts tenet.

Under that context, places such as the Budo Dojo define it this way: An unshakable mind and an immovable spirit is the state of fudoshin. It is courage and stability displayed both mentally and physically. Rather than indicating rigidity and inflexibility, fudoshin describes a condition that is not easily upset by internal thoughts or external forces. It is capable of receiving a strong attack while retaining composure and balance. It receives and yields lightly, grounds to the earth, and reflects aggression back to the source.

Other translations of this title include unwavering mind, immovable mind, unwavering composure, imperturbability, steadfastness, keeping a cool head in an emergency, or keeping one's calm (during a fight).

The first two Kanji alone mean immobility, firmness, fixed, steadfastness, motionless, and idle.

The last Kanji means heart, mind, soul, or essence.

Together, these three Kanji create a title defined as “immovable mind” within the context of Japanese martial arts. However, in Chinese, it would mean “motionless heart,” and in Korean Hanja, “wafting heart” or “floating heart.”

不動心館 can be translated as “Fudoshinkan,” or “Immovable Mind Hall.”

Fudoshinkan (不動心館) refers to various Japanese martial arts schools, primarily focusing on Aikido, Iaido (sword art), and Jodo (short staff), emphasizing the concept of Fudoshin (不動心) – a calm, immovable mind in the face of challenge, reflecting traditional samurai spirit through dynamic training and inner peace

Immovable mind; unwavering composure. Hall/school (as in -kan / -gwan).

不動心道 can be translated as “Fudoshin-Do,” or “Immovable Mind Way.”