害人不淺

害人不浅
hàirénbùqiǎn
(idiom) (usu. of behaviors, systems or trends etc) to cause people tremendous harm

CEDICT

to cause great harm to people

Wiktionary

對人危害很大。

重編國語辭典

Entry Composition

1 害人 hàirén
  1. to harm sb
  2. to inflict suffering
  3. to victimize
  4. pernicious
2 不 bù
  1. no; not so
  2. (bound form) not; un-
3 淺 qiǎn
  1. shallow
  2. light (color)