hows and whys
The first and last reason is an idiom, pronounced sh ǐ m ò Yu á NY ó u, which means "the course and cause of things", also known as "the first and last reason".
interpretation
The whole story: the whole story. Cause: the cause. What happened and why. It is also called "the beginning and the end".
source
In Yuan Dynasty, Ma Zhiyuan's Qingshan tears, the fourth fold: "you should not deceive Yin, but tell us the whole story in detail."
Examples
The ninth chapter of Chen Lang's snow moon plum in Qing Dynasty: "where does this daughter-in-law dare to hide, she has to tell the whole story straight."
hows and whys
try every possible way to persuade sb - hǎo shuō dǎi shuō
hardship of travel without shelter - cān fēng sù lù
live in the wilds and dwell in caves - xué jū yě chǔ
Orange turns into trifoliate orange - jú huà wéi zhǐ