Interpretation refers to doing things correctly, so it takes little effort and achieves great results.

The source "Mencius Gongsun Ugly": "A man with an ancient story will do twice as much, but this is the time." A story of getting twice the result with half the effort

If an example can make good use of his expertise and experience, it is relatively easy to get twice the result with half the effort. (Zou Taofen's "Experience and Future")

Synonyms kill two birds with one stone.

The antonym is not worth the loss, but far from the near.

Related Baidu "get twice the result with half the effort"