Inner Power in Chinese / Japanese...

自力 is a word in Chinese, Japanese Kanji, old Korean, and Buddhist term meaning: the power within oneself; self-sufficient; by oneself; self-made; self-power; inner ability.

內力 is the shorter version of inner strength (can also be translated as “internal force”). The first character holds the meaning of “inner” or “internal.” The second character means “power,” “force,” or “strength.”

內力 is a Kung Fu way of talking about an inner power or strength from within. This is a way to express “inner chi.” This is something that you might hear in a real Chinese Kung Fu movie.

While understood in Chinese and Japanese, this can have a secondary meaning of “inner stress” in Japanese.

內在力量 is the slightly-verbose way to say inner strength.

The first two characters mean “intrinsic” or “inner.” The second two characters mean “power,” “force” or “strength” (especially physical strength). 內在力量 is more a short phrase rather than just a word in Chinese and Korean. This can sort of be understood in Japanese but it's not normal/proper Japanese.

内面の強さは外見の良さに勝る is a Japanese proverb that literally translates as “inner/internal strength/power [versus] outward-appearance [the] merit/virtue/good quality [does] excel/surpass/exceed/outweigh.”

More naturally in English, this would be “Inner Strength Outweighs Outward Appearance.”

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

自強 is the kind of inner strength that applies to a person who has will-power and can inspire themselves to do great things.

自強 can also be the creed of a person that always pursues self-improvement.

Other translations: self-strengthening, striving for improvement, self-improvement, striving to become stronger, and self-renewal.