as the arm directing the fingers -- command with ease as one wishes

as the arm directing the fingers -- command with ease as one wishes

It's a Chinese idiom. Pinyin is sh ǐ B ì sh ǐ zh ǐ, which means to command freely like using one's own arms and fingers. It's from Guanzi light and heavy B.

The origin of Idioms

"Guanzi, light and heavy B": "if this is the case, it is like using the arm in the chest and the finger in the arm."

Idiom usage

It can be used as predicate and object. In the biography of Jia Yi in the history of Han Dynasty, it is said that "if you command the power of the sea, you must obey it."