Correct

金不换

/ jīn bù huàn /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/金不换-Chinese-idioms-Cchatty-26469819-a877-4157-8ad5-42507c84f58e-1612778326.jpg

Collocation

1
是个金不换
2
金不换的古董
3
浪子回头金不换

Definition

金不换

Literally means:

not to be exchanged even for gold

Actually means:

It describes something that is so precious that cannot be exchanged even for gold. It also refers to a commendable person. Commendatory.

别人拿金子都换不到的东西。形容十分可贵。也指十分可贵的人。具有褒义色彩。

Example

Used as predicate, attributive or object. (作谓语、定语、宾语)
1
yào
不要
wéi
以为
lǎoshijiāo
老实巴交
méichū
没出息
  
,
zhèyàng
这样
de
lǎoshi
老实
réncái
人才
jīnhuàn
金不换
ne
  
!

Don't think he's honest, but such an honest talent doesn't change!

2
jiā
他家
duì
huāpíng
花瓶
shì
可是
jīnhuàn
金不换
de
dǒng
古董
  
,
chū
duō
gāo
de
jiàqian
价钱
  
,
dōu
huì
不会
mài
de
  

His family's pair of vases are gold-free antiques, how high you pay, he will not sell.

3
Zhè
háizi
孩子
cōngming
聪明
yòu
hàoxué
好学
  
,
zhǐyào
只要
hǎohǎo
好好
péiyǎng
培养
  
,
jiānglái
将来
dìng
一定
shì
jīnhuàn
金不换
  

The child is smart and learned, as long as it is well cultivated, the future must be a gold does not change.