Correct

止境

/ zhǐjìng / 
Strokes

Definition

limit/boundary/end

Example

As a Noun

end; limit

1
Kēxué
科学
de
的
fāzhǎn
发展
shì
是
méiyǒu
没有
zhǐjìng
止境
de
的
  
。

There is no limit to the development of science.

2
Xuéwúzhǐjìng
学无止境

knowledge is infinite; live and learn