源於

源于
yuányú
has its origins in

CEDICT

Entry Composition

1 源 yuán
  1. root
  2. source
  3. origin
2 於 yú
  1. (of time or place) in; at; on
  2. (indicating any indirect relation) to; toward; vis-à-vis; with regard to; for
  3. (indicating a source) from; out of
  4. (used in comparison) than
  5. (used in the passive voice) by