- 追根溯源 zhuīgēnsùyuán to get to the bottom of somethingTo trace something back to its origins through a thorough search; to investigate the root cause of a matter.
- 追本溯源 zhuīběnsùyuán to trace to the sourceto trace something back to its origin; to get to the root of a matter
- 寻根溯源 xúngēnsùyuán to trace to the sourceto pursue something back to its origins; to trace back to the source; to get to the bottom of something
- 推本溯源 tuīběnsùyuán to trace back to the sourceto investigate the origins of a matter; to seek out the root cause of something
- 逆流溯源 nìliúsùyuán to go back to the sourceto trace something back to its origins by going against the current
