知白守黑

知白守黑 [zhī bái shǒu hēi]

1. ■ know and observe all but stay obscure; Although the rights and wrongs are perfectly clear in mind, one should be in the dark and remain silent.; know the white and keep the black -- A person must cede or yield when it is necessary.; stick to obscurity for a reason, even if one knows that light is sth. valuable