如數家珍 (jyu4 sou2 gaa1 zan1) — very familiar with one's subject; literal: as if enumerating one's family valuables; in Cantonese
jyuˎ₄如souˊ²數gaaˉ¹家zanˉ¹珍简 如数家珍
Mandarin Pinyin: ru2 shu3 jia1 zhen1
Meaning of 如數家珍
nounvery familiar with one's subject; literal: as if enumerating one's family valuables;