二更

èrgēng
second of the five night watch periods 21:00-23:00 (old)

CEDICT

old

Entry Composition

1 二 èr
  1. two
  2. 2
  3. (Beijing dialect) stupid
2 更 gēng
  1. to change or replace
  2. to experience
  3. one of the five two-hour periods into which the night was formerly divided
  4. watch (e.g. of a sentry or guard)