trace to the very source of sth.
It is a Chinese idiom with a Pinyin of Qi ó ngyu á ns ù Li ú, which means to explore and trace the origin of things. From modern Chinese dictionary, 5th Edition.
Idiom explanation
Metaphor explores and traces the origin of things.
The origin of Idioms
Modern Chinese dictionary, 5th Edition.
Chinese PinYin : qióng yuán shuò liú
trace to the very source of sth.
conduct affairs on one's own. bián yú cóng shì
use the neighbour 's field as an outlet for one 's overflow. yǐ lín wéi hè
be friends in the days when hard up. pín jiàn zhī jiāo