What does 'New brush sweeps clean' mean?

'A new brush sweeps clean' means that someone with a new perspective can make great changes. However, the full version is 'a new brush sweeps clean, but an old brush knows the corners', which warns that experience is also a valuable thing. Sometimes 'broom' is used instead of 'brush'.

All idioms have been editorially reviewed, and submitted idioms may have been edited for correctness and completeness.

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