追根求源 zhuī gēn qiú yuán

DEFINITIONS

  1. to track sth to its roots

CHARACTERS

追 zhuī
HSK 5
pursue, chase after; expel
根 gēn
HSK 3
root, base(d on); foundation
求 qiú
HSK 3
seek; demand, request; beseech
源 yuán
HSK 5
spring; source, head; surname