Correct

积习

/ jīxí /
Strokes

Definition

old habit (usually bad)/inbred custom/deep-rooted practice

Example

As a Noun

inveterate/confirmed/old habit; long-standing practice; settled habit

1
积习
chéng
  

A long-standing practice becomes a custom.

2
积习
jiǔ
de
yānguǐ
烟鬼

inveterate smoker

3
Xiāochú
消除
积习

get rid of ingrained habits