恰qià到dào好hǎo处chù

Literal: exactly up to the right point
Figurative: Said of something pitched exactly right: neither too little nor too much, and perfect for that reason.

Where does 恰到好处 come from?

It comes from no particular anecdote: the meaning is visible in the words themselves. 恰 means "exactly," 到 "to reach," and 好处 preserves an older sense here —"the right point, the proper measure"— rather than its everyday modern one, "advantage, benefit." Hence it describes whatever stops precisely where it should. It fits the salt in a dish, the length of a speech, or a remark made at just the right moment.

How is 恰到好处 used? Two examples

这zhè篇piān稿gǎo子zi长cháng短duǎn恰qià到dào好hǎo处chù，不bù用yòng再zài删shān了le。
The piece runs exactly the right length; there's no need to cut anything else.
他tā这zhè句jù话huà说shuō得de恰qià到dào好hǎo处chù，既jì没méi得dé罪zuì人rén，也yě把bǎ问wèn题tí点diǎn明míng了le。
What he said struck exactly the right note: nobody took offense, and the problem was out in the open.

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