No Pain No Gain in Chinese / Japanese...

不痛不強 is a proverb that is close to our idea of “no pain, no gain” in English. It holds this meaning in the context of working out at the gym etc.

不痛不強 means “no pain, no strength,” meaning that if you don't experience a little pain, you will not gain any strength.

痛みなくして得るものなし is a Japanese phrase that means “no pain, no gain.”

This suggests that with pain, a gain must follow.

The pain Kanji here can also be translated as sorrow or suffering. The gain can also mean profit, advantage, or benefit. In the Japanese Buddhist context, that gain Kanji can mean rebirth in paradise, entering nirvana.

The character breakdown:
痛みなく (itami naku) pain; ache; sore; grief; distress. The naku part adds the meaning of “a lot of” or “extended”
して (shite) and then. (indicates a causative expression; acts as a connective particle)
得る (eru) to get; to acquire; to obtain; to procure; to earn; to win; to gain; to secure; to attain.
もの (mono) conjunctive particle indicating a cause or reason.
なし (nashi) none of; -less; without; no.

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

吃一塹長一智 is a Chinese proverb that means “Fall into a moat, and you will gain wisdom from the experience.”

It really suggests that the failures, troubles, frustrations, and setbacks that you encounter in your life are actually helping you to find wisdom. Some would also translate this proverb as “Learn from your mistakes” or “Learn from your experience.”

If you are studying Chinese, you will recognize the first character as “eat,” but in this case, it means to “experience” (as used in this proverb, it is suggesting that you have fallen into a moat and/or had a hard time crossing it).
Translated character by character, this whole proverb is, “Experience one moat, gain one wisdom/knowledge.”

Note: This can be pronounced in Korean, but it's not a commonly used phrase.