实锤

實錘
shíchuí
  1. (neologism c. 2014) (slang) solid proof
  2. irrefutable evidence

CEDICT

neologism slang

Entry Composition

1 实 shí
  1. real
  2. true
  3. honest
  4. really
  5. solid
  6. fruit
  7. seed
  8. definitely
=2 锤 chuí
  1. hammer
  2. to hammer into shape
  3. weight (e.g. of a steelyard or balance)
  4. to strike with a hammer
=2 锤 chuí variant of 锤 chuí