xīn guān shàng rèn sān bǎ huǒ

ㄒㄧㄣㄍㄨㄢㄕㄤˋ ㄖㄣˋ ㄙㄢㄅㄚˇ ㄏㄨㄛˇ

Idiom

1(of a newly appointed official) to make bold changes on assuming office (idiom)