开诚布公

1. • lit. deal sincerely and fairly (idiom) frank and open-minded
2. • plain speaking
3. • Let's talk frankly and openly between ourselves.
4. • to put one's cards on the table

Character by character

• 开(kāi)open
• 诚(chéng)sincere
• 布(bù)announce
• 公(gōng)public