The same source and the same flow
Chinese idioms, Pinyin is t ó ngyu á ng ò ngli ú, meaning the same source and direction; metaphor of the same, unified. From Dabin opera.
The origin of Idioms
Ban Gu's "Dabin opera" in the Eastern Han Dynasty: "it's based on six harmonies, all of which are of the same origin and flow together, bathing in Xuande and admiring Dahu."
Idiom usage
Used as a predicate or attributive; used in writing.
The same source and the same flow
conceal the faults of others and praise their good points - yǐn è yáng shàn
sincerity can make metal and stone crack - jīn shí wèi kāi
to have a tender heart for the fair sex - lián xiāng xī yù