Correct

老本

/ lǎoběn /
Strokes

Definition

capital/assets/savings/nest egg/(fig.) reputation/laurels (to rest upon)/old edition of a book/(tree) trunk

Example

As a Noun

principal; capital

1
lǎoběn
老本
shūguāng
输光

lose one's last stakes

2
Péiguāng
赔光
lǎoběn
老本

sustain a loss of every cent of one's capital in business

3
Lāo
huí
lǎoběn
老本

win back one's lost money

4
Kuī
lǎoběn
老本

lose one's capital

As a Noun

abilities or skills one can rely on; assets

5
Zhè
nián
méi
xué
duōshǎo
多少
xīn
zhīshí
知识
  
,
gōngzuò
工作
lai
起来
quán
kào
xuéxiào
学校
diǎn
lǎoběn
老本
  

I haven't obtained much knowledge in recent years. The bit of knowledge I've been using was obtained while I was at school.

As a Noun

one's past merits/achievements/laurels