Idioms that describe "not revealing one's talents" include: not showing one's edge, not seeing the Cape of Gui, being foolish in one's wisdom, not revealing the Cape of Gui, and hiding something. Words describing "not revealing wealth" are rare.
related idioms
1. don't show your edge? [ bù lù fēng máng ]?
sharpness: a metaphor for sharpness or talent. Not showing vigour or talent. More refers to deliberately concealing one's talents, ambitions, etc.
going out; Song Lv Zuqian's Collected Works of Lu Donglai, Miscellaneous Notes, Volume 2: "Those who have strong words but don't show their edge; Good words. "
2. No Cape Kwai? [ bù jiàn guī jiǎo ]?
means not showing one's edge or talent.
3. Even the wisest man is foolish? [ dà zhì ruò yú ]?
some people with outstanding talents don't show their abilities, and they seem to be stupid.
going out; Song Su Shi's "Congratulations to Ouyang Xiu": "If you are brave, you will be afraid; Great wisdom is like a fool. "
4. don't reveal the cape? [ bù lù guī jiǎo ]?
guijiao: the corner of guiyu. Metaphorical talents are not exposed.
5. is it hidden? [ shēn cáng bù lù ]?
Metaphorically, people are knowledgeable but introverted, and they don't like to show off their talents in front of others.