Say all you know and say all you can(zhī wú bù yán，yán wú bù jìn)

Say all you know and say all you can

Knowing everything and saying everything are Chinese words. Pinyin is zh ī w ú B ù y á n, y á NW ú B ú J ì n, which means to say what you know, and to say it without reservation.

Source source of Su Xun's Heng Lun Yuan Wu, Song Dynasty: "you can say everything you know, you can say everything you want, you can't encrypt the reputation of a hundred people, you can't neglect the damage of a hundred people."

Chinese PinYin : zhī wú bù yán，yán wú bù jìn