久經考驗 jiǔ jīng kǎo yàn

DEFINITIONS

  1. well tested (idiom); seasoned
  2. veteran

CHARACTERS

久 jiǔ
HSK 3
long time (ago); time passage, grow late
經 jīng classic works; pass through
考 kǎo
HSK 2
examine, test; investigate
驗 yàn test, examine, inspect; verify