answer as quickly as the flowing of water
It is a Chinese idiom, Pinyin is y ì NGD á R ú Xi ǎ ng, which means that the answer is like an echo, and it describes that the answer is quick and fluent. It comes from the biography of Du Bi in the book of the Northern Qi Dynasty.
The origin of Idioms
Biography of Du Bi in the book of the Northern Qi Dynasty: "Bi you Congmin Zhen Chen of the same county was the governor of Dingzhou. He made a brief examination of all the students. He asked them questions when he saw them. He explained his meaning clearly and answered them like a voice. He was greatly surprised by Chen
Analysis of Idioms
Answer like a response, answer like a flow
Idiom usage
It's a good way to have a heart to heart talk. The appendix of Fu Feng Zhuan Xin Lu contains Wu Ming Shi's Hou Hui Xian Ji in Qing Dynasty
answer as quickly as the flowing of water
There are three unknowns in this - cǐ zhōng sān mèi
be injured in the sinews or bones - shāng jīn dòng gǔ
be dreesed in fine clothes and ride on well-groomed horses - xiān yī liáng mǎ