Correct

遗患

/ yí huàn / 
Strokes

Example

As a Verb

sow seeds of disasters; be a constant source of further troubles

1
Yǎnghǔyíhuàn
养虎遗患

appeasement brings disaster

2
Yíhuànwúqíong
遗患无穷

leave endless disasters

As a Noun

seeds of disasters

3
Xiāochú
消除
yíhuàn
遗患

eliminate/get rid of the seeds of disasters