Hidden willows and hidden flowers
Liu Yinhua Zha, a Chinese idiom, is Li à nhu à Zha in pinyin, which means the hazy scenery of flowers and willows at night. It's from duanzhenghao, a beautiful prostitute by Wu Changling of Yuan Dynasty.
The origin of Idioms
Yuan · Wu Changling's divertimento "upright and beautiful prostitute" is: "the leakage is longer, the candle is fragrant, the willow is dark and the flower is covered with the dawn."
Idiom explanation
It describes the hazy scenery of flowers and willows in the late night.
Hidden willows and hidden flowers
The evil of the party favors the evil - dǎng è yòu jiān
make impartial comments or statements - chí lùn gōng yǔn