不越雷池

bùyuè Léichí
  1. not overstepping the prescribed limits
  2. to remain within bounds

CEDICT

Entry Composition

1 不 bù
  1. no; not so
  2. (bound form) not; un-
2 越 yuè
  1. to exceed
  2. to climb over
  3. to surpass
  4. the more... the more
3 雷池 léichí
  1. (figurative) prescribed limit; boundary
  2. (historical) An ancient name for a river in modern-day Anhui province, China.
  3. An ancient name for a river in modern-day Anhui province, China.
  4. prescribed limit; boundary