know and observe all but stay obscure
Knowing the white and guarding the black is an idiom, and the Pinyin is zh ī B á ISH ǒ uh ē I, which means to know right and wrong in black and white. Although you understand it, you should still keep it dark, as if nothing can be seen. This is the negative attitude of Taoism. From Laozi.
The origin of Idioms
Laozi: "knowing its white and keeping its black is the world style."
Idiom usage
This is the negative attitude of Taoism
know and observe all but stay obscure
lady 's thick and beautiful hair - fēng huán wù bìn
Stick to the weak and embrace the disabled - shǒu quē bào cán
untidy appearance with prisoner 's unkempt hair and unwashed face - qiú shǒu gòu miàn
Quiet words are not easy to violate - jìng yán yōng wéi