当局者迷，旁观者清

當局者迷，旁觀者清
dāngjúzhěmí,pángguānzhěqīng
(idiom) an outsider can see things more clearly or objectively than those involved

CEDICT

Entry Composition

1 当局者 dāngjúzhě
  1. (chess) participant; player
  2. participant; player
2 迷 mí
  1. to bewilder
  2. crazy about
  3. fan
  4. enthusiast
  5. lost
  6. confused
3 旁观者清 pángguānzhěqīng an outsider can see things more clearly or objectively than those involved (idiom)

Related entries

旁观者清 pángguānzhěqīng an outsider can see things more clearly or objectively than those involved (idiom)
旁观者清，当局者迷。

The authorities have no clue, but everyone else knows.

Source: Tatoeba