Correct

蛀虫

/ zhùchóng / 
Strokes

Definition

insect that eats into wood, books, clothes etc/fig. vermin

Example

As a Noun

insect that eats books, clothes or wood; moth; borer

1
Shèhuì
社会
zhǔyì
主义
shìyè
事业
de
的
zhùchóng
蛀虫

vermin that are trying to undermine the socialist cause