Let loose
It's a Chinese idiom. Pinyin is f à NGP à s à h á o, which means to play a rogue and hold power against others. It's from the spring tide.
The origin of Idioms
Kefei's "spring tide is urgent" 30: "Li beard, who is determined to let loose, reaches out and grabs the broken leather hat on his head, slams it on the square table and shouts at Meng er's beard:" get out! "
Idiom usage
Used as predicate, object, attribute; used as a person.
Let loose
Pay attention to both gold and purple - chóng jīn jiān zǐ
not to change one 's voice and expression because of emotion - bù dòng shēng sè