get to the bottom of the matter
Qiongyuan Jingwei, a Chinese idiom, Pinyin is Qi ó ngyu á NJ ì NGW ě I, which means to describe the development process of things. It's from the book of rites.
Idiom explanation
Poverty and competition: thorough pursuit; source: origin; Commission: end.
The origin of Idioms
In the book of rites, Xueji: "the sacrifice of the three kings to Sichuan is first followed by the sea, either from the source or by the Commission, which is called Wuben."
Idiom usage
Make a thorough understanding of the whole story. In the biography of Xu Zhenming in the history of Ming Dynasty, it is said that "the river will be dredged again."
get to the bottom of the matter
ascend a height and enjoy a distant view - dēng gāo wàng yuǎn
emulate those better than oneself - jiàn xián sī qí