A new broom sweeps clean.

用扫帚把路上的东西扫干净！

If a broom is new, it sweeps clean;

如扫帚，是新的，它打扫干净；

There is an old saying in China, whose English equivalent is “a new broom sweeps clean”.

中国俗话说“新官上任三把火”。

The new director has changed many of the department rules. A new broom sweeps clean.

新主任更改了这个部的很多规定。真是新官上任三把火！

He's doing fine. A new broom sweeps clean.

他干得不错。新官上任三把火嘛。