转入地下 zhuǎn rù dì xià

DEFINITIONS

  1. to go underground
  2. to turn to secret activities

CHARACTERS

转 zhuǎn
HSK 4
shift, move, turn
入 rù
HSK 4
enter, come in(to), join
地 dì
HSK 3
earth; soil, ground; region
下 xià
HSK 1
under, underneath, below; down; inferior; bring down