如数家珍 rú shǔ jiā zhēn

DEFINITIONS

  1. lit. as if enumerating one's family valuables (idiom)
  2. fig. to be very familiar with a matter

CHARACTERS

如 rú if, supposing; as if; like, as
数 shǔ number; several, count; fate
家 jiā house, home, residence; family
珍 zhēn precious, valuable, rare