氪金

kèjīn
to make an in-app purchase in a game

CEDICT

Entry Composition

1 氪 kè krypton (chemistry)
2 金 jīn
  1. gold
  2. chemical element Au
  3. generic term for lustrous and ductile metals
  4. money
  5. golden
  6. highly respected
  7. one of the eight categories of ancient musical instruments 八音 bāyīn