Where does “trúng tủ” come from?

trúng tủ (Vietnamese) comes from Vietnamese từ, from Chinese 字, from Chinese 母, from Proto-Sino-Tibetan *məʔ — mother.

trúng tủ (Vietnamese): to be fortunate and be tested on the only thing(s) one has studied

Definitions

  1. to be fortunate and be tested on the only thing(s) one has studied

Ancestry of “trúng tủ”, step by step

trúng tủ traces back through two separate lines of ancestry.

via Vietnamese từ

StepLanguageWordMeaning
1Vietnamesetừfrom, since; at, in; word
2Chinese字—
3Chinese母—
4Proto-Sino-Tibetan*məʔmother

via Vietnamese trứng

StepLanguageWordMeaning
1Vietnamesetrứngan egg
2Chinese中middle
3Proto-Sino-Tibetant/duŋnavel; centre
Every word from Proto-Sino-Tibetan *məʔ →Every word from Chinese 母 →Every word from Chinese 字 →