The meaning of being honest with each other

Open your eyes to each other.

Pronunciation kāI chéng Xiāng Jian

Interpretation of righteousness and honesty: open your mind and show sincerity. Describe being sincere to others and show sincerity.

From the Biography of Ma Yuan in the Later Han Dynasty: "Let's be honest and have nothing to hide, as big as we are, just like Gaudi."