as easy as to turn one 's hand
It is a Chinese idiom. Pinyin is y ì t ó NGF ǎ nzh ǎ ng. It means that things are easy to do and it doesn't take much effort. It comes from the biography of Wang daozhuan in northern history.
The origin of Idioms
In the biography of Wang daozhuan in the northern history: "this state controls Huainan and is adjacent to the powerful bandits. If you want to do something for yourself, you can easily fight against each other."
Idiom usage
Used as predicate, attributive and adverbial; used in figurative sentences.
as easy as to turn one 's hand
brace up one while the others tumble down - dōng fú xī dǎo